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Finding the Fourth Proportional to 8,730.99, 12,034.17 and 6,488.91

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Solution

The fourth proportional to 8,730.99, 12,034.17 and 6,488.91 is: 8,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,730.99 : 12,034.17 = 6,488.91 : x
  2. Step 2: Convert to fraction form
    8,730.99/12,034.17 = 6,488.91/x
  3. Step 3: Cross multiply
    8,730.99x = 12,034.17 × 6,488.91
  4. Step 4: Simplify right side
    8,730.99x = 78,088,646.05
  5. Step 5: Solve for x
    x = 78,088,646.05/8,730.99
  6. Step 6: Final answer
    x = 8,943.85

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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.