Home / 5,311.20-7,321.86-3,542.16

Finding the Fourth Proportional to 5,311.20, 7,321.86 and 3,542.16

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Solution

The fourth proportional to 5,311.20, 7,321.86 and 3,542.16 is: 4,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.20 : 7,321.86 = 3,542.16 : x
  2. Step 2: Convert to fraction form
    5,311.20/7,321.86 = 3,542.16/x
  3. Step 3: Cross multiply
    5,311.20x = 7,321.86 × 3,542.16
  4. Step 4: Simplify right side
    5,311.20x = 25,935,199.62
  5. Step 5: Solve for x
    x = 25,935,199.62/5,311.20
  6. Step 6: Final answer
    x = 4,883.11

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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.