Home / 3,938.60-5,434.26-2,446.40

Finding the Fourth Proportional to 3,938.60, 5,434.26 and 2,446.40

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Solution

The fourth proportional to 3,938.60, 5,434.26 and 2,446.40 is: 3,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.60 : 5,434.26 = 2,446.40 : x
  2. Step 2: Convert to fraction form
    3,938.60/5,434.26 = 2,446.40/x
  3. Step 3: Cross multiply
    3,938.60x = 5,434.26 × 2,446.40
  4. Step 4: Simplify right side
    3,938.60x = 13,294,373.66
  5. Step 5: Solve for x
    x = 13,294,373.66/3,938.60
  6. Step 6: Final answer
    x = 3,375.41

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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.