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Finding the Fourth Proportional to 6,462.39, 8,915.90 and 3,943.83

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Solution

The fourth proportional to 6,462.39, 8,915.90 and 3,943.83 is: 5,441.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,462.39 : 8,915.90 = 3,943.83 : x
  2. Step 2: Convert to fraction form
    6,462.39/8,915.90 = 3,943.83/x
  3. Step 3: Cross multiply
    6,462.39x = 8,915.90 × 3,943.83
  4. Step 4: Simplify right side
    6,462.39x = 35,162,774.18
  5. Step 5: Solve for x
    x = 35,162,774.18/6,462.39
  6. Step 6: Final answer
    x = 5,441.14

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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.