Home / 8,785.28-12,135.52-7,029.44

Finding the Fourth Proportional to 8,785.28, 12,135.52 and 7,029.44

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Solution

The fourth proportional to 8,785.28, 12,135.52 and 7,029.44 is: 9,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.28 : 12,135.52 = 7,029.44 : x
  2. Step 2: Convert to fraction form
    8,785.28/12,135.52 = 7,029.44/x
  3. Step 3: Cross multiply
    8,785.28x = 12,135.52 × 7,029.44
  4. Step 4: Simplify right side
    8,785.28x = 85,305,909.71
  5. Step 5: Solve for x
    x = 85,305,909.71/8,785.28
  6. Step 6: Final answer
    x = 9,710.10

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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.