Home / 5,517.78-7,614.58-2,999.90

Finding the Fourth Proportional to 5,517.78, 7,614.58 and 2,999.90

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Solution

The fourth proportional to 5,517.78, 7,614.58 and 2,999.90 is: 4,139.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.78 : 7,614.58 = 2,999.90 : x
  2. Step 2: Convert to fraction form
    5,517.78/7,614.58 = 2,999.90/x
  3. Step 3: Cross multiply
    5,517.78x = 7,614.58 × 2,999.90
  4. Step 4: Simplify right side
    5,517.78x = 22,842,978.54
  5. Step 5: Solve for x
    x = 22,842,978.54/5,517.78
  6. Step 6: Final answer
    x = 4,139.89

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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.