Home / 1,332.60-1,838.80-742.92

Finding the Fourth Proportional to 1,332.60, 1,838.80 and 742.92

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Solution

The fourth proportional to 1,332.60, 1,838.80 and 742.92 is: 1,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.60 : 1,838.80 = 742.92 : x
  2. Step 2: Convert to fraction form
    1,332.60/1,838.80 = 742.92/x
  3. Step 3: Cross multiply
    1,332.60x = 1,838.80 × 742.92
  4. Step 4: Simplify right side
    1,332.60x = 1,366,081.30
  5. Step 5: Solve for x
    x = 1,366,081.30/1,332.60
  6. Step 6: Final answer
    x = 1,025.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.