Home / 3,938.31-5,435.65-2,260.85

Finding the Fourth Proportional to 3,938.31, 5,435.65 and 2,260.85

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Solution

The fourth proportional to 3,938.31, 5,435.65 and 2,260.85 is: 3,120.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.31 : 5,435.65 = 2,260.85 : x
  2. Step 2: Convert to fraction form
    3,938.31/5,435.65 = 2,260.85/x
  3. Step 3: Cross multiply
    3,938.31x = 5,435.65 × 2,260.85
  4. Step 4: Simplify right side
    3,938.31x = 12,289,189.30
  5. Step 5: Solve for x
    x = 12,289,189.30/3,938.31
  6. Step 6: Final answer
    x = 3,120.42

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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.