Home / 3,998.07-5,517.72-2,988.01

Finding the Fourth Proportional to 3,998.07, 5,517.72 and 2,988.01

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Solution

The fourth proportional to 3,998.07, 5,517.72 and 2,988.01 is: 4,123.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.07 : 5,517.72 = 2,988.01 : x
  2. Step 2: Convert to fraction form
    3,998.07/5,517.72 = 2,988.01/x
  3. Step 3: Cross multiply
    3,998.07x = 5,517.72 × 2,988.01
  4. Step 4: Simplify right side
    3,998.07x = 16,487,024.95
  5. Step 5: Solve for x
    x = 16,487,024.95/3,998.07
  6. Step 6: Final answer
    x = 4,123.75

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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.