Home / 3,972.68-5,481.44-2,400.76

Finding the Fourth Proportional to 3,972.68, 5,481.44 and 2,400.76

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Solution

The fourth proportional to 3,972.68, 5,481.44 and 2,400.76 is: 3,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.68 : 5,481.44 = 2,400.76 : x
  2. Step 2: Convert to fraction form
    3,972.68/5,481.44 = 2,400.76/x
  3. Step 3: Cross multiply
    3,972.68x = 5,481.44 × 2,400.76
  4. Step 4: Simplify right side
    3,972.68x = 13,159,621.89
  5. Step 5: Solve for x
    x = 13,159,621.89/3,972.68
  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.