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Finding the Fourth Proportional to 6,308.08, 8,705 and 3,951.52

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Solution

The fourth proportional to 6,308.08, 8,705 and 3,951.52 is: 5,453.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.08 : 8,705 = 3,951.52 : x
  2. Step 2: Convert to fraction form
    6,308.08/8,705 = 3,951.52/x
  3. Step 3: Cross multiply
    6,308.08x = 8,705 × 3,951.52
  4. Step 4: Simplify right side
    6,308.08x = 34,397,981.60
  5. Step 5: Solve for x
    x = 34,397,981.60/6,308.08
  6. Step 6: Final answer
    x = 5,453.00

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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.