Home / 3,921.28-5,908.92-3,243.20

Finding the Fourth Proportional to 3,921.28, 5,908.92 and 3,243.20

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Solution

The fourth proportional to 3,921.28, 5,908.92 and 3,243.20 is: 4,887.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.28 : 5,908.92 = 3,243.20 : x
  2. Step 2: Convert to fraction form
    3,921.28/5,908.92 = 3,243.20/x
  3. Step 3: Cross multiply
    3,921.28x = 5,908.92 × 3,243.20
  4. Step 4: Simplify right side
    3,921.28x = 19,163,809.34
  5. Step 5: Solve for x
    x = 19,163,809.34/3,921.28
  6. Step 6: Final answer
    x = 4,887.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.