Home / 1,332.15-1,838.30-742.57

Finding the Fourth Proportional to 1,332.15, 1,838.30 and 742.57

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Solution

The fourth proportional to 1,332.15, 1,838.30 and 742.57 is: 1,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.15 : 1,838.30 = 742.57 : x
  2. Step 2: Convert to fraction form
    1,332.15/1,838.30 = 742.57/x
  3. Step 3: Cross multiply
    1,332.15x = 1,838.30 × 742.57
  4. Step 4: Simplify right side
    1,332.15x = 1,365,058.12
  5. Step 5: Solve for x
    x = 1,365,058.12/1,332.15
  6. Step 6: Final answer
    x = 1,024.71

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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.