Home / 3,981.20-5,494.12-2,302.64

Finding the Fourth Proportional to 3,981.20, 5,494.12 and 2,302.64

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Solution

The fourth proportional to 3,981.20, 5,494.12 and 2,302.64 is: 3,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.20 : 5,494.12 = 2,302.64 : x
  2. Step 2: Convert to fraction form
    3,981.20/5,494.12 = 2,302.64/x
  3. Step 3: Cross multiply
    3,981.20x = 5,494.12 × 2,302.64
  4. Step 4: Simplify right side
    3,981.20x = 12,650,980.48
  5. Step 5: Solve for x
    x = 12,650,980.48/3,981.20
  6. Step 6: Final answer
    x = 3,177.68

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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.