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Finding the Fourth Proportional to 8,500.65, 12,739.88 and 4,337.15

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Solution

The fourth proportional to 8,500.65, 12,739.88 and 4,337.15 is: 6,500.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.65 : 12,739.88 = 4,337.15 : x
  2. Step 2: Convert to fraction form
    8,500.65/12,739.88 = 4,337.15/x
  3. Step 3: Cross multiply
    8,500.65x = 12,739.88 × 4,337.15
  4. Step 4: Simplify right side
    8,500.65x = 55,254,717.69
  5. Step 5: Solve for x
    x = 55,254,717.69/8,500.65
  6. Step 6: Final answer
    x = 6,500.06

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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.