Home / 7,819.34-11,727.86-2,887.92

Finding the Fourth Proportional to 7,819.34, 11,727.86 and 2,887.92

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Solution

The fourth proportional to 7,819.34, 11,727.86 and 2,887.92 is: 4,331.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.34 : 11,727.86 = 2,887.92 : x
  2. Step 2: Convert to fraction form
    7,819.34/11,727.86 = 2,887.92/x
  3. Step 3: Cross multiply
    7,819.34x = 11,727.86 × 2,887.92
  4. Step 4: Simplify right side
    7,819.34x = 33,869,107.01
  5. Step 5: Solve for x
    x = 33,869,107.01/7,819.34
  6. Step 6: Final answer
    x = 4,331.46

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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.