Home / 7,819.12-11,730.40-2,624.88

Finding the Fourth Proportional to 7,819.12, 11,730.40 and 2,624.88

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Solution

The fourth proportional to 7,819.12, 11,730.40 and 2,624.88 is: 3,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.12 : 11,730.40 = 2,624.88 : x
  2. Step 2: Convert to fraction form
    7,819.12/11,730.40 = 2,624.88/x
  3. Step 3: Cross multiply
    7,819.12x = 11,730.40 × 2,624.88
  4. Step 4: Simplify right side
    7,819.12x = 30,790,892.35
  5. Step 5: Solve for x
    x = 30,790,892.35/7,819.12
  6. Step 6: Final answer
    x = 3,937.90

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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.