Home / 3,390.48-5,078.79-2,513.97

Finding the Fourth Proportional to 3,390.48, 5,078.79 and 2,513.97

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Solution

The fourth proportional to 3,390.48, 5,078.79 and 2,513.97 is: 3,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.48 : 5,078.79 = 2,513.97 : x
  2. Step 2: Convert to fraction form
    3,390.48/5,078.79 = 2,513.97/x
  3. Step 3: Cross multiply
    3,390.48x = 5,078.79 × 2,513.97
  4. Step 4: Simplify right side
    3,390.48x = 12,767,925.70
  5. Step 5: Solve for x
    x = 12,767,925.70/3,390.48
  6. Step 6: Final answer
    x = 3,765.82

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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.