Home / 3,938.10-5,437.24-2,757.12

Finding the Fourth Proportional to 3,938.10, 5,437.24 and 2,757.12

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Solution

The fourth proportional to 3,938.10, 5,437.24 and 2,757.12 is: 3,806.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.10 : 5,437.24 = 2,757.12 : x
  2. Step 2: Convert to fraction form
    3,938.10/5,437.24 = 2,757.12/x
  3. Step 3: Cross multiply
    3,938.10x = 5,437.24 × 2,757.12
  4. Step 4: Simplify right side
    3,938.10x = 14,991,111.38
  5. Step 5: Solve for x
    x = 14,991,111.38/3,938.10
  6. Step 6: Final answer
    x = 3,806.69

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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.