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Finding the Fourth Proportional to 7,819.04, 11,729.64 and 2,624.24

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Solution

The fourth proportional to 7,819.04, 11,729.64 and 2,624.24 is: 3,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.04 : 11,729.64 = 2,624.24 : x
  2. Step 2: Convert to fraction form
    7,819.04/11,729.64 = 2,624.24/x
  3. Step 3: Cross multiply
    7,819.04x = 11,729.64 × 2,624.24
  4. Step 4: Simplify right side
    7,819.04x = 30,781,390.47
  5. Step 5: Solve for x
    x = 30,781,390.47/7,819.04
  6. Step 6: Final answer
    x = 3,936.72

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1.5x scale

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.