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Finding the Fourth Proportional to 1,355.57, 2,032.13 and 1,125.93

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Solution

The fourth proportional to 1,355.57, 2,032.13 and 1,125.93 is: 1,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.57 : 2,032.13 = 1,125.93 : x
  2. Step 2: Convert to fraction form
    1,355.57/2,032.13 = 1,125.93/x
  3. Step 3: Cross multiply
    1,355.57x = 2,032.13 × 1,125.93
  4. Step 4: Simplify right side
    1,355.57x = 2,288,030.50
  5. Step 5: Solve for x
    x = 2,288,030.50/1,355.57
  6. Step 6: Final answer
    x = 1,687.88

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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.