Home / 5,117.28-7,061.48-2,879.04

Finding the Fourth Proportional to 5,117.28, 7,061.48 and 2,879.04

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Solution

The fourth proportional to 5,117.28, 7,061.48 and 2,879.04 is: 3,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.28 : 7,061.48 = 2,879.04 : x
  2. Step 2: Convert to fraction form
    5,117.28/7,061.48 = 2,879.04/x
  3. Step 3: Cross multiply
    5,117.28x = 7,061.48 × 2,879.04
  4. Step 4: Simplify right side
    5,117.28x = 20,330,283.38
  5. Step 5: Solve for x
    x = 20,330,283.38/5,117.28
  6. Step 6: Final answer
    x = 3,972.87

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Double scale
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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.