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Finding the Fourth Proportional to 8,479.17, 11,700.95 and 4,702.50

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Solution

The fourth proportional to 8,479.17, 11,700.95 and 4,702.50 is: 6,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.17 : 11,700.95 = 4,702.50 : x
  2. Step 2: Convert to fraction form
    8,479.17/11,700.95 = 4,702.50/x
  3. Step 3: Cross multiply
    8,479.17x = 11,700.95 × 4,702.50
  4. Step 4: Simplify right side
    8,479.17x = 55,023,693.86
  5. Step 5: Solve for x
    x = 55,023,693.86/8,479.17
  6. Step 6: Final answer
    x = 6,489.28

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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.