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Finding the Fourth Proportional to 9,266.66, 12,787.11 and 5,489.83

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Solution

The fourth proportional to 9,266.66, 12,787.11 and 5,489.83 is: 7,575.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.66 : 12,787.11 = 5,489.83 : x
  2. Step 2: Convert to fraction form
    9,266.66/12,787.11 = 5,489.83/x
  3. Step 3: Cross multiply
    9,266.66x = 12,787.11 × 5,489.83
  4. Step 4: Simplify right side
    9,266.66x = 70,199,060.09
  5. Step 5: Solve for x
    x = 70,199,060.09/9,266.66
  6. Step 6: Final answer
    x = 7,575.44

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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.