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Finding the Fourth Proportional to 8,757.70, 13,074.19 and 8,450.15

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Solution

The fourth proportional to 8,757.70, 13,074.19 and 8,450.15 is: 12,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.70 : 13,074.19 = 8,450.15 : x
  2. Step 2: Convert to fraction form
    8,757.70/13,074.19 = 8,450.15/x
  3. Step 3: Cross multiply
    8,757.70x = 13,074.19 × 8,450.15
  4. Step 4: Simplify right side
    8,757.70x = 110,478,780.13
  5. Step 5: Solve for x
    x = 110,478,780.13/8,757.70
  6. Step 6: Final answer
    x = 12,615.05

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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.