Home / 3,938.29-5,433.90-2,236.71

Finding the Fourth Proportional to 3,938.29, 5,433.90 and 2,236.71

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Solution

The fourth proportional to 3,938.29, 5,433.90 and 2,236.71 is: 3,086.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.29 : 5,433.90 = 2,236.71 : x
  2. Step 2: Convert to fraction form
    3,938.29/5,433.90 = 2,236.71/x
  3. Step 3: Cross multiply
    3,938.29x = 5,433.90 × 2,236.71
  4. Step 4: Simplify right side
    3,938.29x = 12,154,058.47
  5. Step 5: Solve for x
    x = 12,154,058.47/3,938.29
  6. Step 6: Final answer
    x = 3,086.13

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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.