Home / 6,325.38-8,720.90-5,186.87

Finding the Fourth Proportional to 6,325.38, 8,720.90 and 5,186.87

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Solution

The fourth proportional to 6,325.38, 8,720.90 and 5,186.87 is: 7,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,325.38 : 8,720.90 = 5,186.87 : x
  2. Step 2: Convert to fraction form
    6,325.38/8,720.90 = 5,186.87/x
  3. Step 3: Cross multiply
    6,325.38x = 8,720.90 × 5,186.87
  4. Step 4: Simplify right side
    6,325.38x = 45,234,157.20
  5. Step 5: Solve for x
    x = 45,234,157.20/6,325.38
  6. Step 6: Final answer
    x = 7,151.22

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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.