Home / 3,122.33-4,669.71-2,778.08

Finding the Fourth Proportional to 3,122.33, 4,669.71 and 2,778.08

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Solution

The fourth proportional to 3,122.33, 4,669.71 and 2,778.08 is: 4,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.33 : 4,669.71 = 2,778.08 : x
  2. Step 2: Convert to fraction form
    3,122.33/4,669.71 = 2,778.08/x
  3. Step 3: Cross multiply
    3,122.33x = 4,669.71 × 2,778.08
  4. Step 4: Simplify right side
    3,122.33x = 12,972,804.61
  5. Step 5: Solve for x
    x = 12,972,804.61/3,122.33
  6. Step 6: Final answer
    x = 4,154.85

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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.