Home / 7,819.34-11,712.40-5,473.78

Finding the Fourth Proportional to 7,819.34, 11,712.40 and 5,473.78

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Solution

The fourth proportional to 7,819.34, 11,712.40 and 5,473.78 is: 8,199.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.34 : 11,712.40 = 5,473.78 : x
  2. Step 2: Convert to fraction form
    7,819.34/11,712.40 = 5,473.78/x
  3. Step 3: Cross multiply
    7,819.34x = 11,712.40 × 5,473.78
  4. Step 4: Simplify right side
    7,819.34x = 64,111,057.91
  5. Step 5: Solve for x
    x = 64,111,057.91/7,819.34
  6. Step 6: Final answer
    x = 8,199.04

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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.