Home / 3,947.55-5,921.36-1,867.61

Finding the Fourth Proportional to 3,947.55, 5,921.36 and 1,867.61

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Solution

The fourth proportional to 3,947.55, 5,921.36 and 1,867.61 is: 2,801.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.55 : 5,921.36 = 1,867.61 : x
  2. Step 2: Convert to fraction form
    3,947.55/5,921.36 = 1,867.61/x
  3. Step 3: Cross multiply
    3,947.55x = 5,921.36 × 1,867.61
  4. Step 4: Simplify right side
    3,947.55x = 11,058,752.20
  5. Step 5: Solve for x
    x = 11,058,752.20/3,947.55
  6. Step 6: Final answer
    x = 2,801.42

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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.