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Finding the Fourth Proportional to 7,375.12, 10,187.99 and 5,135.88

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Solution

The fourth proportional to 7,375.12, 10,187.99 and 5,135.88 is: 7,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,375.12 : 10,187.99 = 5,135.88 : x
  2. Step 2: Convert to fraction form
    7,375.12/10,187.99 = 5,135.88/x
  3. Step 3: Cross multiply
    7,375.12x = 10,187.99 × 5,135.88
  4. Step 4: Simplify right side
    7,375.12x = 52,324,294.08
  5. Step 5: Solve for x
    x = 52,324,294.08/7,375.12
  6. Step 6: Final answer
    x = 7,094.70

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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.