Home / 3,947.85-5,921.78-3,707.28

Finding the Fourth Proportional to 3,947.85, 5,921.78 and 3,707.28

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Solution

The fourth proportional to 3,947.85, 5,921.78 and 3,707.28 is: 5,560.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.85 : 5,921.78 = 3,707.28 : x
  2. Step 2: Convert to fraction form
    3,947.85/5,921.78 = 3,707.28/x
  3. Step 3: Cross multiply
    3,947.85x = 5,921.78 × 3,707.28
  4. Step 4: Simplify right side
    3,947.85x = 21,953,678.02
  5. Step 5: Solve for x
    x = 21,953,678.02/3,947.85
  6. Step 6: Final answer
    x = 5,560.92

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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.