Home / 3,965.92-5,475.60-3,718.12

Finding the Fourth Proportional to 3,965.92, 5,475.60 and 3,718.12

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Solution

The fourth proportional to 3,965.92, 5,475.60 and 3,718.12 is: 5,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.92 : 5,475.60 = 3,718.12 : x
  2. Step 2: Convert to fraction form
    3,965.92/5,475.60 = 3,718.12/x
  3. Step 3: Cross multiply
    3,965.92x = 5,475.60 × 3,718.12
  4. Step 4: Simplify right side
    3,965.92x = 20,358,937.87
  5. Step 5: Solve for x
    x = 20,358,937.87/3,965.92
  6. Step 6: Final answer
    x = 5,133.47

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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.