Home / 8,129.08-12,180.90-6,284.74

Finding the Fourth Proportional to 8,129.08, 12,180.90 and 6,284.74

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Solution

The fourth proportional to 8,129.08, 12,180.90 and 6,284.74 is: 9,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.08 : 12,180.90 = 6,284.74 : x
  2. Step 2: Convert to fraction form
    8,129.08/12,180.90 = 6,284.74/x
  3. Step 3: Cross multiply
    8,129.08x = 12,180.90 × 6,284.74
  4. Step 4: Simplify right side
    8,129.08x = 76,553,789.47
  5. Step 5: Solve for x
    x = 76,553,789.47/8,129.08
  6. Step 6: Final answer
    x = 9,417.28

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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.