Home / 3,988.20-5,504.40-2,496.72

Finding the Fourth Proportional to 3,988.20, 5,504.40 and 2,496.72

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Solution

The fourth proportional to 3,988.20, 5,504.40 and 2,496.72 is: 3,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.20 : 5,504.40 = 2,496.72 : x
  2. Step 2: Convert to fraction form
    3,988.20/5,504.40 = 2,496.72/x
  3. Step 3: Cross multiply
    3,988.20x = 5,504.40 × 2,496.72
  4. Step 4: Simplify right side
    3,988.20x = 13,742,945.57
  5. Step 5: Solve for x
    x = 13,742,945.57/3,988.20
  6. Step 6: Final answer
    x = 3,445.90

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1.5x scale

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.