Home / 2,428.02-3,640.68-1,128.24

Finding the Fourth Proportional to 2,428.02, 3,640.68 and 1,128.24

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Solution

The fourth proportional to 2,428.02, 3,640.68 and 1,128.24 is: 1,691.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.02 : 3,640.68 = 1,128.24 : x
  2. Step 2: Convert to fraction form
    2,428.02/3,640.68 = 1,128.24/x
  3. Step 3: Cross multiply
    2,428.02x = 3,640.68 × 1,128.24
  4. Step 4: Simplify right side
    2,428.02x = 4,107,560.80
  5. Step 5: Solve for x
    x = 4,107,560.80/2,428.02
  6. Step 6: Final answer
    x = 1,691.73

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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.