Why prices are different in different fiat currencies on the same market? What I noticed is that prices in different fiat currencies on the same market for the same crypto currency are different. But what are the reasons behind that? Does it has anything to do with market volume for the fiat currencies? What variables I need to know to predict the difference in prices?

Few examples:

1) Cexio.

BTC/USD: 6286 USD (~4749 GBP)

BTC/GBP: 4787 GBP (~6336 USD)

Price in GBP tends to be higher (currently it's +0.8%).



2) Kraken.

BTC/USD: 6263 USD (~4732 GBP)

BTC/GBP: 4743 GBP (~6277 USD)

Price in GBP tends to be highter (currently it's +0.2%).



BTC/USD: 6263 USD (703.5k JPY)

BTC/JPY: 697.2k JPY (6206 USD)

Price in JPY tends to be lower (currently it's -0.9%).



BTC/USD: 6269 USD (~5363 EUR)

BTC/EUR: 5373 EUR (~6280 USD)

Currently price is higher in EUR (+0.2%). But it changes from time to time. Sometimes price is higher in USD. Why?
Because they are different markets. Each trading pair is its own market with its own supply and demand. Each has its own set of orders and traders. It is the same reason that different exchanges have Bitcoin at different rates: they are independent of each other.