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Finding the Fourth Proportional to 8,605.60, 12,892.38 and 7,227.88

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Solution

The fourth proportional to 8,605.60, 12,892.38 and 7,227.88 is: 10,828.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.60 : 12,892.38 = 7,227.88 : x
  2. Step 2: Convert to fraction form
    8,605.60/12,892.38 = 7,227.88/x
  3. Step 3: Cross multiply
    8,605.60x = 12,892.38 × 7,227.88
  4. Step 4: Simplify right side
    8,605.60x = 93,184,575.55
  5. Step 5: Solve for x
    x = 93,184,575.55/8,605.60
  6. Step 6: Final answer
    x = 10,828.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.