Home / 5,440.38-7,509.15-3,759.90

Finding the Fourth Proportional to 5,440.38, 7,509.15 and 3,759.90

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Solution

The fourth proportional to 5,440.38, 7,509.15 and 3,759.90 is: 5,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440.38 : 7,509.15 = 3,759.90 : x
  2. Step 2: Convert to fraction form
    5,440.38/7,509.15 = 3,759.90/x
  3. Step 3: Cross multiply
    5,440.38x = 7,509.15 × 3,759.90
  4. Step 4: Simplify right side
    5,440.38x = 28,233,653.09
  5. Step 5: Solve for x
    x = 28,233,653.09/5,440.38
  6. Step 6: Final answer
    x = 5,189.65

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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.