Home / 3,863.60-5,331.36-2,291.42

Finding the Fourth Proportional to 3,863.60, 5,331.36 and 2,291.42

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Solution

The fourth proportional to 3,863.60, 5,331.36 and 2,291.42 is: 3,161.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.60 : 5,331.36 = 2,291.42 : x
  2. Step 2: Convert to fraction form
    3,863.60/5,331.36 = 2,291.42/x
  3. Step 3: Cross multiply
    3,863.60x = 5,331.36 × 2,291.42
  4. Step 4: Simplify right side
    3,863.60x = 12,216,384.93
  5. Step 5: Solve for x
    x = 12,216,384.93/3,863.60
  6. Step 6: Final answer
    x = 3,161.92

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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.