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Finding the Fourth Proportional to 9,118.75, 12,586.98 and 5,343.11

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Solution

The fourth proportional to 9,118.75, 12,586.98 and 5,343.11 is: 7,375.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.75 : 12,586.98 = 5,343.11 : x
  2. Step 2: Convert to fraction form
    9,118.75/12,586.98 = 5,343.11/x
  3. Step 3: Cross multiply
    9,118.75x = 12,586.98 × 5,343.11
  4. Step 4: Simplify right side
    9,118.75x = 67,253,686.30
  5. Step 5: Solve for x
    x = 67,253,686.30/9,118.75
  6. Step 6: Final answer
    x = 7,375.32

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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.