Home / 1,489.18-2,229.44-1,057.18

Finding the Fourth Proportional to 1,489.18, 2,229.44 and 1,057.18

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Solution

The fourth proportional to 1,489.18, 2,229.44 and 1,057.18 is: 1,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.18 : 2,229.44 = 1,057.18 : x
  2. Step 2: Convert to fraction form
    1,489.18/2,229.44 = 1,057.18/x
  3. Step 3: Cross multiply
    1,489.18x = 2,229.44 × 1,057.18
  4. Step 4: Simplify right side
    1,489.18x = 2,356,919.38
  5. Step 5: Solve for x
    x = 2,356,919.38/1,489.18
  6. Step 6: Final answer
    x = 1,582.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.