Home / 6,442.38-9,669.90-3,157.86

Finding the Fourth Proportional to 6,442.38, 9,669.90 and 3,157.86

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Solution

The fourth proportional to 6,442.38, 9,669.90 and 3,157.86 is: 4,739.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,442.38 : 9,669.90 = 3,157.86 : x
  2. Step 2: Convert to fraction form
    6,442.38/9,669.90 = 3,157.86/x
  3. Step 3: Cross multiply
    6,442.38x = 9,669.90 × 3,157.86
  4. Step 4: Simplify right side
    6,442.38x = 30,536,190.41
  5. Step 5: Solve for x
    x = 30,536,190.41/6,442.38
  6. Step 6: Final answer
    x = 4,739.89

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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.