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Finding the Fourth Proportional to 8,689.85, 13,052.82 and 7,025.85

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Solution

The fourth proportional to 8,689.85, 13,052.82 and 7,025.85 is: 10,553.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.85 : 13,052.82 = 7,025.85 : x
  2. Step 2: Convert to fraction form
    8,689.85/13,052.82 = 7,025.85/x
  3. Step 3: Cross multiply
    8,689.85x = 13,052.82 × 7,025.85
  4. Step 4: Simplify right side
    8,689.85x = 91,707,155.40
  5. Step 5: Solve for x
    x = 91,707,155.40/8,689.85
  6. Step 6: Final answer
    x = 10,553.36

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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.