Home / 5,120.41-7,064.75-2,882.15

Finding the Fourth Proportional to 5,120.41, 7,064.75 and 2,882.15

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Solution

The fourth proportional to 5,120.41, 7,064.75 and 2,882.15 is: 3,976.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.41 : 7,064.75 = 2,882.15 : x
  2. Step 2: Convert to fraction form
    5,120.41/7,064.75 = 2,882.15/x
  3. Step 3: Cross multiply
    5,120.41x = 7,064.75 × 2,882.15
  4. Step 4: Simplify right side
    5,120.41x = 20,361,654.80
  5. Step 5: Solve for x
    x = 20,361,654.80/5,120.41
  6. Step 6: Final answer
    x = 3,976.57

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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.