Home / 5,078.25-7,008.80-2,981.97

Finding the Fourth Proportional to 5,078.25, 7,008.80 and 2,981.97

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Solution

The fourth proportional to 5,078.25, 7,008.80 and 2,981.97 is: 4,115.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.25 : 7,008.80 = 2,981.97 : x
  2. Step 2: Convert to fraction form
    5,078.25/7,008.80 = 2,981.97/x
  3. Step 3: Cross multiply
    5,078.25x = 7,008.80 × 2,981.97
  4. Step 4: Simplify right side
    5,078.25x = 20,900,016.43
  5. Step 5: Solve for x
    x = 20,900,016.43/5,078.25
  6. Step 6: Final answer
    x = 4,115.59

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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.