Home / 8,940.30-12,337.68-5,405.86

Finding the Fourth Proportional to 8,940.30, 12,337.68 and 5,405.86

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Solution

The fourth proportional to 8,940.30, 12,337.68 and 5,405.86 is: 7,460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.30 : 12,337.68 = 5,405.86 : x
  2. Step 2: Convert to fraction form
    8,940.30/12,337.68 = 5,405.86/x
  3. Step 3: Cross multiply
    8,940.30x = 12,337.68 × 5,405.86
  4. Step 4: Simplify right side
    8,940.30x = 66,695,770.80
  5. Step 5: Solve for x
    x = 66,695,770.80/8,940.30
  6. Step 6: Final answer
    x = 7,460.13

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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.