Home / 3,945.28-5,445.07-2,600.68

Finding the Fourth Proportional to 3,945.28, 5,445.07 and 2,600.68

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Solution

The fourth proportional to 3,945.28, 5,445.07 and 2,600.68 is: 3,589.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.28 : 5,445.07 = 2,600.68 : x
  2. Step 2: Convert to fraction form
    3,945.28/5,445.07 = 2,600.68/x
  3. Step 3: Cross multiply
    3,945.28x = 5,445.07 × 2,600.68
  4. Step 4: Simplify right side
    3,945.28x = 14,160,884.65
  5. Step 5: Solve for x
    x = 14,160,884.65/3,945.28
  6. Step 6: Final answer
    x = 3,589.32

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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.