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Finding the Fourth Proportional to 8,849.67, 12,227.67 and 7,728.90

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Solution

The fourth proportional to 8,849.67, 12,227.67 and 7,728.90 is: 10,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,849.67 : 12,227.67 = 7,728.90 : x
  2. Step 2: Convert to fraction form
    8,849.67/12,227.67 = 7,728.90/x
  3. Step 3: Cross multiply
    8,849.67x = 12,227.67 × 7,728.90
  4. Step 4: Simplify right side
    8,849.67x = 94,506,438.66
  5. Step 5: Solve for x
    x = 94,506,438.66/8,849.67
  6. Step 6: Final answer
    x = 10,679.09

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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.