Home / 7,118.20-9,821.61-4,132.49

Finding the Fourth Proportional to 7,118.20, 9,821.61 and 4,132.49

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Solution

The fourth proportional to 7,118.20, 9,821.61 and 4,132.49 is: 5,701.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.20 : 9,821.61 = 4,132.49 : x
  2. Step 2: Convert to fraction form
    7,118.20/9,821.61 = 4,132.49/x
  3. Step 3: Cross multiply
    7,118.20x = 9,821.61 × 4,132.49
  4. Step 4: Simplify right side
    7,118.20x = 40,587,656.00
  5. Step 5: Solve for x
    x = 40,587,656.00/7,118.20
  6. Step 6: Final answer
    x = 5,701.95

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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.