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Finding the Fourth Proportional to 6,687.40, 10,031.10 and 6,082.60

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Solution

The fourth proportional to 6,687.40, 10,031.10 and 6,082.60 is: 9,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.40 : 10,031.10 = 6,082.60 : x
  2. Step 2: Convert to fraction form
    6,687.40/10,031.10 = 6,082.60/x
  3. Step 3: Cross multiply
    6,687.40x = 10,031.10 × 6,082.60
  4. Step 4: Simplify right side
    6,687.40x = 61,015,168.86
  5. Step 5: Solve for x
    x = 61,015,168.86/6,687.40
  6. Step 6: Final answer
    x = 9,123.90

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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.