Home / 9,142.07-13,691.18-4,971.72

Finding the Fourth Proportional to 9,142.07, 13,691.18 and 4,971.72

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Solution

The fourth proportional to 9,142.07, 13,691.18 and 4,971.72 is: 7,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,142.07 : 13,691.18 = 4,971.72 : x
  2. Step 2: Convert to fraction form
    9,142.07/13,691.18 = 4,971.72/x
  3. Step 3: Cross multiply
    9,142.07x = 13,691.18 × 4,971.72
  4. Step 4: Simplify right side
    9,142.07x = 68,068,688.57
  5. Step 5: Solve for x
    x = 68,068,688.57/9,142.07
  6. Step 6: Final answer
    x = 7,445.66

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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.