Home / 9,120.38-13,680.12-2,546.42

Finding the Fourth Proportional to 9,120.38, 13,680.12 and 2,546.42

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Solution

The fourth proportional to 9,120.38, 13,680.12 and 2,546.42 is: 3,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.38 : 13,680.12 = 2,546.42 : x
  2. Step 2: Convert to fraction form
    9,120.38/13,680.12 = 2,546.42/x
  3. Step 3: Cross multiply
    9,120.38x = 13,680.12 × 2,546.42
  4. Step 4: Simplify right side
    9,120.38x = 34,835,331.17
  5. Step 5: Solve for x
    x = 34,835,331.17/9,120.38
  6. Step 6: Final answer
    x = 3,819.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.