Home / 7,209.60-9,949.08-4,065.78

Finding the Fourth Proportional to 7,209.60, 9,949.08 and 4,065.78

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Solution

The fourth proportional to 7,209.60, 9,949.08 and 4,065.78 is: 5,610.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.60 : 9,949.08 = 4,065.78 : x
  2. Step 2: Convert to fraction form
    7,209.60/9,949.08 = 4,065.78/x
  3. Step 3: Cross multiply
    7,209.60x = 9,949.08 × 4,065.78
  4. Step 4: Simplify right side
    7,209.60x = 40,450,770.48
  5. Step 5: Solve for x
    x = 40,450,770.48/7,209.60
  6. Step 6: Final answer
    x = 5,610.68

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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.