Home / 8,631.91-12,938.06-7,589.89

Finding the Fourth Proportional to 8,631.91, 12,938.06 and 7,589.89

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Solution

The fourth proportional to 8,631.91, 12,938.06 and 7,589.89 is: 11,376.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.91 : 12,938.06 = 7,589.89 : x
  2. Step 2: Convert to fraction form
    8,631.91/12,938.06 = 7,589.89/x
  3. Step 3: Cross multiply
    8,631.91x = 12,938.06 × 7,589.89
  4. Step 4: Simplify right side
    8,631.91x = 98,198,452.21
  5. Step 5: Solve for x
    x = 98,198,452.21/8,631.91
  6. Step 6: Final answer
    x = 11,376.22

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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.