Home / 5,129.92-7,072.68-3,360.88

Finding the Fourth Proportional to 5,129.92, 7,072.68 and 3,360.88

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Solution

The fourth proportional to 5,129.92, 7,072.68 and 3,360.88 is: 4,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.92 : 7,072.68 = 3,360.88 : x
  2. Step 2: Convert to fraction form
    5,129.92/7,072.68 = 3,360.88/x
  3. Step 3: Cross multiply
    5,129.92x = 7,072.68 × 3,360.88
  4. Step 4: Simplify right side
    5,129.92x = 23,770,428.76
  5. Step 5: Solve for x
    x = 23,770,428.76/5,129.92
  6. Step 6: Final answer
    x = 4,633.68

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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.