Home / 8,785.20-12,124.08-5,007.72

Finding the Fourth Proportional to 8,785.20, 12,124.08 and 5,007.72

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Solution

The fourth proportional to 8,785.20, 12,124.08 and 5,007.72 is: 6,910.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.20 : 12,124.08 = 5,007.72 : x
  2. Step 2: Convert to fraction form
    8,785.20/12,124.08 = 5,007.72/x
  3. Step 3: Cross multiply
    8,785.20x = 12,124.08 × 5,007.72
  4. Step 4: Simplify right side
    8,785.20x = 60,713,997.90
  5. Step 5: Solve for x
    x = 60,713,997.90/8,785.20
  6. Step 6: Final answer
    x = 6,910.94

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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.