Home / 7,819.62-11,718.51-5,618.04

Finding the Fourth Proportional to 7,819.62, 11,718.51 and 5,618.04

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Solution

The fourth proportional to 7,819.62, 11,718.51 and 5,618.04 is: 8,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.62 : 11,718.51 = 5,618.04 : x
  2. Step 2: Convert to fraction form
    7,819.62/11,718.51 = 5,618.04/x
  3. Step 3: Cross multiply
    7,819.62x = 11,718.51 × 5,618.04
  4. Step 4: Simplify right side
    7,819.62x = 65,835,057.92
  5. Step 5: Solve for x
    x = 65,835,057.92/7,819.62
  6. Step 6: Final answer
    x = 8,419.21

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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.