Home / 3,157.60-4,358.20-1,963.12

Finding the Fourth Proportional to 3,157.60, 4,358.20 and 1,963.12

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Solution

The fourth proportional to 3,157.60, 4,358.20 and 1,963.12 is: 2,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.60 : 4,358.20 = 1,963.12 : x
  2. Step 2: Convert to fraction form
    3,157.60/4,358.20 = 1,963.12/x
  3. Step 3: Cross multiply
    3,157.60x = 4,358.20 × 1,963.12
  4. Step 4: Simplify right side
    3,157.60x = 8,555,669.58
  5. Step 5: Solve for x
    x = 8,555,669.58/3,157.60
  6. Step 6: Final answer
    x = 2,709.55

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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.