Home / 6,349.11-8,757.68-3,987.15

Finding the Fourth Proportional to 6,349.11, 8,757.68 and 3,987.15

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Solution

The fourth proportional to 6,349.11, 8,757.68 and 3,987.15 is: 5,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,349.11 : 8,757.68 = 3,987.15 : x
  2. Step 2: Convert to fraction form
    6,349.11/8,757.68 = 3,987.15/x
  3. Step 3: Cross multiply
    6,349.11x = 8,757.68 × 3,987.15
  4. Step 4: Simplify right side
    6,349.11x = 34,918,183.81
  5. Step 5: Solve for x
    x = 34,918,183.81/6,349.11
  6. Step 6: Final answer
    x = 5,499.70

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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.