Home / 3,147.92-4,342.40-1,966.96

Finding the Fourth Proportional to 3,147.92, 4,342.40 and 1,966.96

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Solution

The fourth proportional to 3,147.92, 4,342.40 and 1,966.96 is: 2,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.92 : 4,342.40 = 1,966.96 : x
  2. Step 2: Convert to fraction form
    3,147.92/4,342.40 = 1,966.96/x
  3. Step 3: Cross multiply
    3,147.92x = 4,342.40 × 1,966.96
  4. Step 4: Simplify right side
    3,147.92x = 8,541,327.10
  5. Step 5: Solve for x
    x = 8,541,327.10/3,147.92
  6. Step 6: Final answer
    x = 2,713.32

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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.