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Finding the Fourth Proportional to 8,739.92, 12,064.11 and 5,154.77

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Solution

The fourth proportional to 8,739.92, 12,064.11 and 5,154.77 is: 7,115.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.92 : 12,064.11 = 5,154.77 : x
  2. Step 2: Convert to fraction form
    8,739.92/12,064.11 = 5,154.77/x
  3. Step 3: Cross multiply
    8,739.92x = 12,064.11 × 5,154.77
  4. Step 4: Simplify right side
    8,739.92x = 62,187,712.30
  5. Step 5: Solve for x
    x = 62,187,712.30/8,739.92
  6. Step 6: Final answer
    x = 7,115.36

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1.5x scale

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.