Home / 9,129.68-13,691.28-3,284.72

Finding the Fourth Proportional to 9,129.68, 13,691.28 and 3,284.72

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Solution

The fourth proportional to 9,129.68, 13,691.28 and 3,284.72 is: 4,925.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.68 : 13,691.28 = 3,284.72 : x
  2. Step 2: Convert to fraction form
    9,129.68/13,691.28 = 3,284.72/x
  3. Step 3: Cross multiply
    9,129.68x = 13,691.28 × 3,284.72
  4. Step 4: Simplify right side
    9,129.68x = 44,972,021.24
  5. Step 5: Solve for x
    x = 44,972,021.24/9,129.68
  6. Step 6: Final answer
    x = 4,925.91

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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.