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Finding the Fourth Proportional to 8,842.20, 12,187.56 and 7,584.68

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Solution

The fourth proportional to 8,842.20, 12,187.56 and 7,584.68 is: 10,454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,842.20 : 12,187.56 = 7,584.68 : x
  2. Step 2: Convert to fraction form
    8,842.20/12,187.56 = 7,584.68/x
  3. Step 3: Cross multiply
    8,842.20x = 12,187.56 × 7,584.68
  4. Step 4: Simplify right side
    8,842.20x = 92,438,742.58
  5. Step 5: Solve for x
    x = 92,438,742.58/8,842.20
  6. Step 6: Final answer
    x = 10,454.27

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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.