Home / 7,772.12-11,658.38-2,578.04

Finding the Fourth Proportional to 7,772.12, 11,658.38 and 2,578.04

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Solution

The fourth proportional to 7,772.12, 11,658.38 and 2,578.04 is: 3,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.12 : 11,658.38 = 2,578.04 : x
  2. Step 2: Convert to fraction form
    7,772.12/11,658.38 = 2,578.04/x
  3. Step 3: Cross multiply
    7,772.12x = 11,658.38 × 2,578.04
  4. Step 4: Simplify right side
    7,772.12x = 30,055,769.98
  5. Step 5: Solve for x
    x = 30,055,769.98/7,772.12
  6. Step 6: Final answer
    x = 3,867.13

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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.