Home / 5,589.38-7,716.40-3,915.92

Finding the Fourth Proportional to 5,589.38, 7,716.40 and 3,915.92

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Solution

The fourth proportional to 5,589.38, 7,716.40 and 3,915.92 is: 5,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,589.38 : 7,716.40 = 3,915.92 : x
  2. Step 2: Convert to fraction form
    5,589.38/7,716.40 = 3,915.92/x
  3. Step 3: Cross multiply
    5,589.38x = 7,716.40 × 3,915.92
  4. Step 4: Simplify right side
    5,589.38x = 30,216,805.09
  5. Step 5: Solve for x
    x = 30,216,805.09/5,589.38
  6. Step 6: Final answer
    x = 5,406.11

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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.