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Finding the Fourth Proportional to 6,721.71, 10,082.40 and 6,518.71

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Solution

The fourth proportional to 6,721.71, 10,082.40 and 6,518.71 is: 9,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.71 : 10,082.40 = 6,518.71 : x
  2. Step 2: Convert to fraction form
    6,721.71/10,082.40 = 6,518.71/x
  3. Step 3: Cross multiply
    6,721.71x = 10,082.40 × 6,518.71
  4. Step 4: Simplify right side
    6,721.71x = 65,724,241.70
  5. Step 5: Solve for x
    x = 65,724,241.70/6,721.71
  6. Step 6: Final answer
    x = 9,777.90

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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.