Home / 5,427-7,489.86-3,069.12

Finding the Fourth Proportional to 5,427, 7,489.86 and 3,069.12

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Solution

The fourth proportional to 5,427, 7,489.86 and 3,069.12 is: 4,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427 : 7,489.86 = 3,069.12 : x
  2. Step 2: Convert to fraction form
    5,427/7,489.86 = 3,069.12/x
  3. Step 3: Cross multiply
    5,427x = 7,489.86 × 3,069.12
  4. Step 4: Simplify right side
    5,427x = 22,987,279.12
  5. Step 5: Solve for x
    x = 22,987,279.12/5,427
  6. Step 6: Final answer
    x = 4,235.72

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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.