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Finding the Fourth Proportional to 6,425.02, 8,867.14 and 3,906.90

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Solution

The fourth proportional to 6,425.02, 8,867.14 and 3,906.90 is: 5,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.02 : 8,867.14 = 3,906.90 : x
  2. Step 2: Convert to fraction form
    6,425.02/8,867.14 = 3,906.90/x
  3. Step 3: Cross multiply
    6,425.02x = 8,867.14 × 3,906.90
  4. Step 4: Simplify right side
    6,425.02x = 34,643,029.27
  5. Step 5: Solve for x
    x = 34,643,029.27/6,425.02
  6. Step 6: Final answer
    x = 5,391.89

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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.