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Finding the Fourth Proportional to 8,522.70, 12,715.59 and 7,587.15

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Solution

The fourth proportional to 8,522.70, 12,715.59 and 7,587.15 is: 11,319.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.70 : 12,715.59 = 7,587.15 : x
  2. Step 2: Convert to fraction form
    8,522.70/12,715.59 = 7,587.15/x
  3. Step 3: Cross multiply
    8,522.70x = 12,715.59 × 7,587.15
  4. Step 4: Simplify right side
    8,522.70x = 96,475,088.67
  5. Step 5: Solve for x
    x = 96,475,088.67/8,522.70
  6. Step 6: Final answer
    x = 11,319.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.