Home / 5,857.28-8,081.76-3,969.20

Finding the Fourth Proportional to 5,857.28, 8,081.76 and 3,969.20

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Solution

The fourth proportional to 5,857.28, 8,081.76 and 3,969.20 is: 5,476.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,857.28 : 8,081.76 = 3,969.20 : x
  2. Step 2: Convert to fraction form
    5,857.28/8,081.76 = 3,969.20/x
  3. Step 3: Cross multiply
    5,857.28x = 8,081.76 × 3,969.20
  4. Step 4: Simplify right side
    5,857.28x = 32,078,121.79
  5. Step 5: Solve for x
    x = 32,078,121.79/5,857.28
  6. Step 6: Final answer
    x = 5,476.62

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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.