Home / 3,947.28-5,920.20-1,606.72

Finding the Fourth Proportional to 3,947.28, 5,920.20 and 1,606.72

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Solution

The fourth proportional to 3,947.28, 5,920.20 and 1,606.72 is: 2,409.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.28 : 5,920.20 = 1,606.72 : x
  2. Step 2: Convert to fraction form
    3,947.28/5,920.20 = 1,606.72/x
  3. Step 3: Cross multiply
    3,947.28x = 5,920.20 × 1,606.72
  4. Step 4: Simplify right side
    3,947.28x = 9,512,103.74
  5. Step 5: Solve for x
    x = 9,512,103.74/3,947.28
  6. Step 6: Final answer
    x = 2,409.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.