Home / 1,165.17-1,747.76-1,129.53

Finding the Fourth Proportional to 1,165.17, 1,747.76 and 1,129.53

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Solution

The fourth proportional to 1,165.17, 1,747.76 and 1,129.53 is: 1,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.17 : 1,747.76 = 1,129.53 : x
  2. Step 2: Convert to fraction form
    1,165.17/1,747.76 = 1,129.53/x
  3. Step 3: Cross multiply
    1,165.17x = 1,747.76 × 1,129.53
  4. Step 4: Simplify right side
    1,165.17x = 1,974,141.71
  5. Step 5: Solve for x
    x = 1,974,141.71/1,165.17
  6. Step 6: Final answer
    x = 1,694.30

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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.