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Finding the Fourth Proportional to 7,672.56, 11,488.31 and 4,381.12

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Solution

The fourth proportional to 7,672.56, 11,488.31 and 4,381.12 is: 6,559.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.56 : 11,488.31 = 4,381.12 : x
  2. Step 2: Convert to fraction form
    7,672.56/11,488.31 = 4,381.12/x
  3. Step 3: Cross multiply
    7,672.56x = 11,488.31 × 4,381.12
  4. Step 4: Simplify right side
    7,672.56x = 50,331,664.71
  5. Step 5: Solve for x
    x = 50,331,664.71/7,672.56
  6. Step 6: Final answer
    x = 6,559.96

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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.