Home / 5,391.12-8,082.65-3,720.48

Finding the Fourth Proportional to 5,391.12, 8,082.65 and 3,720.48

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Solution

The fourth proportional to 5,391.12, 8,082.65 and 3,720.48 is: 5,577.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.12 : 8,082.65 = 3,720.48 : x
  2. Step 2: Convert to fraction form
    5,391.12/8,082.65 = 3,720.48/x
  3. Step 3: Cross multiply
    5,391.12x = 8,082.65 × 3,720.48
  4. Step 4: Simplify right side
    5,391.12x = 30,071,337.67
  5. Step 5: Solve for x
    x = 30,071,337.67/5,391.12
  6. Step 6: Final answer
    x = 5,577.94

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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.