Home / 5,147.12-7,100.12-3,156.96

Finding the Fourth Proportional to 5,147.12, 7,100.12 and 3,156.96

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Solution

The fourth proportional to 5,147.12, 7,100.12 and 3,156.96 is: 4,354.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.12 : 7,100.12 = 3,156.96 : x
  2. Step 2: Convert to fraction form
    5,147.12/7,100.12 = 3,156.96/x
  3. Step 3: Cross multiply
    5,147.12x = 7,100.12 × 3,156.96
  4. Step 4: Simplify right side
    5,147.12x = 22,414,794.84
  5. Step 5: Solve for x
    x = 22,414,794.84/5,147.12
  6. Step 6: Final answer
    x = 4,354.82

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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.