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Finding the Fourth Proportional to 6,885.47, 9,500.38 and 3,900.62

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Solution

The fourth proportional to 6,885.47, 9,500.38 and 3,900.62 is: 5,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.47 : 9,500.38 = 3,900.62 : x
  2. Step 2: Convert to fraction form
    6,885.47/9,500.38 = 3,900.62/x
  3. Step 3: Cross multiply
    6,885.47x = 9,500.38 × 3,900.62
  4. Step 4: Simplify right side
    6,885.47x = 37,057,314.98
  5. Step 5: Solve for x
    x = 37,057,314.98/6,885.47
  6. Step 6: Final answer
    x = 5,381.96

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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.