Home / 5,240.13-7,861.08-2,607.78

Finding the Fourth Proportional to 5,240.13, 7,861.08 and 2,607.78

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Solution

The fourth proportional to 5,240.13, 7,861.08 and 2,607.78 is: 3,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.13 : 7,861.08 = 2,607.78 : x
  2. Step 2: Convert to fraction form
    5,240.13/7,861.08 = 2,607.78/x
  3. Step 3: Cross multiply
    5,240.13x = 7,861.08 × 2,607.78
  4. Step 4: Simplify right side
    5,240.13x = 20,499,967.20
  5. Step 5: Solve for x
    x = 20,499,967.20/5,240.13
  6. Step 6: Final answer
    x = 3,912.11

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1.5x scale

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.