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Finding the Fourth Proportional to 8,702.10, 12,008.86 and 4,723.18

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Solution

The fourth proportional to 8,702.10, 12,008.86 and 4,723.18 is: 6,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.10 : 12,008.86 = 4,723.18 : x
  2. Step 2: Convert to fraction form
    8,702.10/12,008.86 = 4,723.18/x
  3. Step 3: Cross multiply
    8,702.10x = 12,008.86 × 4,723.18
  4. Step 4: Simplify right side
    8,702.10x = 56,719,965.54
  5. Step 5: Solve for x
    x = 56,719,965.54/8,702.10
  6. Step 6: Final answer
    x = 6,517.96

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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.