Home / 7,384.72-11,081.20-3,489.12

Finding the Fourth Proportional to 7,384.72, 11,081.20 and 3,489.12

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Solution

The fourth proportional to 7,384.72, 11,081.20 and 3,489.12 is: 5,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,384.72 : 11,081.20 = 3,489.12 : x
  2. Step 2: Convert to fraction form
    7,384.72/11,081.20 = 3,489.12/x
  3. Step 3: Cross multiply
    7,384.72x = 11,081.20 × 3,489.12
  4. Step 4: Simplify right side
    7,384.72x = 38,663,636.54
  5. Step 5: Solve for x
    x = 38,663,636.54/7,384.72
  6. Step 6: Final answer
    x = 5,235.63

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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.