Home / 1,620.66-2,236.55-922.04

Finding the Fourth Proportional to 1,620.66, 2,236.55 and 922.04

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Solution

The fourth proportional to 1,620.66, 2,236.55 and 922.04 is: 1,272.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.66 : 2,236.55 = 922.04 : x
  2. Step 2: Convert to fraction form
    1,620.66/2,236.55 = 922.04/x
  3. Step 3: Cross multiply
    1,620.66x = 2,236.55 × 922.04
  4. Step 4: Simplify right side
    1,620.66x = 2,062,181.16
  5. Step 5: Solve for x
    x = 2,062,181.16/1,620.66
  6. Step 6: Final answer
    x = 1,272.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.