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Finding the Fourth Proportional to 8,700.60, 11,998 and 7,445.84

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Solution

The fourth proportional to 8,700.60, 11,998 and 7,445.84 is: 10,267.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.60 : 11,998 = 7,445.84 : x
  2. Step 2: Convert to fraction form
    8,700.60/11,998 = 7,445.84/x
  3. Step 3: Cross multiply
    8,700.60x = 11,998 × 7,445.84
  4. Step 4: Simplify right side
    8,700.60x = 89,335,188.32
  5. Step 5: Solve for x
    x = 89,335,188.32/8,700.60
  6. Step 6: Final answer
    x = 10,267.70

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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.