Home / 7,408.80-11,112.93-1,862.19

Finding the Fourth Proportional to 7,408.80, 11,112.93 and 1,862.19

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Solution

The fourth proportional to 7,408.80, 11,112.93 and 1,862.19 is: 2,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,408.80 : 11,112.93 = 1,862.19 : x
  2. Step 2: Convert to fraction form
    7,408.80/11,112.93 = 1,862.19/x
  3. Step 3: Cross multiply
    7,408.80x = 11,112.93 × 1,862.19
  4. Step 4: Simplify right side
    7,408.80x = 20,694,387.12
  5. Step 5: Solve for x
    x = 20,694,387.12/7,408.80
  6. Step 6: Final answer
    x = 2,793.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.