Home / 2,381.29-3,572.96-921.47

Finding the Fourth Proportional to 2,381.29, 3,572.96 and 921.47

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Solution

The fourth proportional to 2,381.29, 3,572.96 and 921.47 is: 1,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.29 : 3,572.96 = 921.47 : x
  2. Step 2: Convert to fraction form
    2,381.29/3,572.96 = 921.47/x
  3. Step 3: Cross multiply
    2,381.29x = 3,572.96 × 921.47
  4. Step 4: Simplify right side
    2,381.29x = 3,292,375.45
  5. Step 5: Solve for x
    x = 3,292,375.45/2,381.29
  6. Step 6: Final answer
    x = 1,382.60

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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.