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Finding the Fourth Proportional to 8,339.61, 12,498.68 and 6,243.20

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Solution

The fourth proportional to 8,339.61, 12,498.68 and 6,243.20 is: 9,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.61 : 12,498.68 = 6,243.20 : x
  2. Step 2: Convert to fraction form
    8,339.61/12,498.68 = 6,243.20/x
  3. Step 3: Cross multiply
    8,339.61x = 12,498.68 × 6,243.20
  4. Step 4: Simplify right side
    8,339.61x = 78,031,665.27
  5. Step 5: Solve for x
    x = 78,031,665.27/8,339.61
  6. Step 6: Final answer
    x = 9,356.75

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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.