Home / 5,391.30-7,436.70-3,291.78

Finding the Fourth Proportional to 5,391.30, 7,436.70 and 3,291.78

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Solution

The fourth proportional to 5,391.30, 7,436.70 and 3,291.78 is: 4,540.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.30 : 7,436.70 = 3,291.78 : x
  2. Step 2: Convert to fraction form
    5,391.30/7,436.70 = 3,291.78/x
  3. Step 3: Cross multiply
    5,391.30x = 7,436.70 × 3,291.78
  4. Step 4: Simplify right side
    5,391.30x = 24,479,980.33
  5. Step 5: Solve for x
    x = 24,479,980.33/5,391.30
  6. Step 6: Final answer
    x = 4,540.65

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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.