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Finding the Fourth Proportional to 8,691.72, 13,039.50 and 4,794.12

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Solution

The fourth proportional to 8,691.72, 13,039.50 and 4,794.12 is: 7,192.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.72 : 13,039.50 = 4,794.12 : x
  2. Step 2: Convert to fraction form
    8,691.72/13,039.50 = 4,794.12/x
  3. Step 3: Cross multiply
    8,691.72x = 13,039.50 × 4,794.12
  4. Step 4: Simplify right side
    8,691.72x = 62,512,927.74
  5. Step 5: Solve for x
    x = 62,512,927.74/8,691.72
  6. Step 6: Final answer
    x = 7,192.24

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1.5x scale

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.