Home / 1,253.67-1,876.66-1,129.74

Finding the Fourth Proportional to 1,253.67, 1,876.66 and 1,129.74

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Solution

The fourth proportional to 1,253.67, 1,876.66 and 1,129.74 is: 1,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.67 : 1,876.66 = 1,129.74 : x
  2. Step 2: Convert to fraction form
    1,253.67/1,876.66 = 1,129.74/x
  3. Step 3: Cross multiply
    1,253.67x = 1,876.66 × 1,129.74
  4. Step 4: Simplify right side
    1,253.67x = 2,120,132.22
  5. Step 5: Solve for x
    x = 2,120,132.22/1,253.67
  6. Step 6: Final answer
    x = 1,691.14

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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.