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Finding the Fourth Proportional to 8,884.80, 12,312.84 and 8,759.52

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Solution

The fourth proportional to 8,884.80, 12,312.84 and 8,759.52 is: 12,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,884.80 : 12,312.84 = 8,759.52 : x
  2. Step 2: Convert to fraction form
    8,884.80/12,312.84 = 8,759.52/x
  3. Step 3: Cross multiply
    8,884.80x = 12,312.84 × 8,759.52
  4. Step 4: Simplify right side
    8,884.80x = 107,854,568.24
  5. Step 5: Solve for x
    x = 107,854,568.24/8,884.80
  6. Step 6: Final answer
    x = 12,139.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.