Home / 3,987.11-5,503.20-2,394.70

Finding the Fourth Proportional to 3,987.11, 5,503.20 and 2,394.70

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Solution

The fourth proportional to 3,987.11, 5,503.20 and 2,394.70 is: 3,305.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.11 : 5,503.20 = 2,394.70 : x
  2. Step 2: Convert to fraction form
    3,987.11/5,503.20 = 2,394.70/x
  3. Step 3: Cross multiply
    3,987.11x = 5,503.20 × 2,394.70
  4. Step 4: Simplify right side
    3,987.11x = 13,178,513.04
  5. Step 5: Solve for x
    x = 13,178,513.04/3,987.11
  6. Step 6: Final answer
    x = 3,305.28

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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.