Home / 3,972.64-5,481.45-2,400.74

Finding the Fourth Proportional to 3,972.64, 5,481.45 and 2,400.74

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Solution

The fourth proportional to 3,972.64, 5,481.45 and 2,400.74 is: 3,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.64 : 5,481.45 = 2,400.74 : x
  2. Step 2: Convert to fraction form
    3,972.64/5,481.45 = 2,400.74/x
  3. Step 3: Cross multiply
    3,972.64x = 5,481.45 × 2,400.74
  4. Step 4: Simplify right side
    3,972.64x = 13,159,508.87
  5. Step 5: Solve for x
    x = 13,159,508.87/3,972.64
  6. Step 6: Final answer
    x = 3,312.53

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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.