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Finding the Fourth Proportional to 8,704.98, 12,005.13 and 7,025.85

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Solution

The fourth proportional to 8,704.98, 12,005.13 and 7,025.85 is: 9,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.98 : 12,005.13 = 7,025.85 : x
  2. Step 2: Convert to fraction form
    8,704.98/12,005.13 = 7,025.85/x
  3. Step 3: Cross multiply
    8,704.98x = 12,005.13 × 7,025.85
  4. Step 4: Simplify right side
    8,704.98x = 84,346,242.61
  5. Step 5: Solve for x
    x = 84,346,242.61/8,704.98
  6. Step 6: Final answer
    x = 9,689.42

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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.