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Finding the Fourth Proportional to 8,117.10, 12,175.65 and 7,047.90

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Solution

The fourth proportional to 8,117.10, 12,175.65 and 7,047.90 is: 10,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.10 : 12,175.65 = 7,047.90 : x
  2. Step 2: Convert to fraction form
    8,117.10/12,175.65 = 7,047.90/x
  3. Step 3: Cross multiply
    8,117.10x = 12,175.65 × 7,047.90
  4. Step 4: Simplify right side
    8,117.10x = 85,812,763.64
  5. Step 5: Solve for x
    x = 85,812,763.64/8,117.10
  6. Step 6: Final answer
    x = 10,571.85

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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.