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Finding the Fourth Proportional to 7,751.76, 11,629.08 and 2,819.76

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Solution

The fourth proportional to 7,751.76, 11,629.08 and 2,819.76 is: 4,230.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.76 : 11,629.08 = 2,819.76 : x
  2. Step 2: Convert to fraction form
    7,751.76/11,629.08 = 2,819.76/x
  3. Step 3: Cross multiply
    7,751.76x = 11,629.08 × 2,819.76
  4. Step 4: Simplify right side
    7,751.76x = 32,791,214.62
  5. Step 5: Solve for x
    x = 32,791,214.62/7,751.76
  6. Step 6: Final answer
    x = 4,230.16

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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.