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Finding the Fourth Proportional to 7,751.52, 11,628.24 and 2,560.80

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Solution

The fourth proportional to 7,751.52, 11,628.24 and 2,560.80 is: 3,841.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.52 : 11,628.24 = 2,560.80 : x
  2. Step 2: Convert to fraction form
    7,751.52/11,628.24 = 2,560.80/x
  3. Step 3: Cross multiply
    7,751.52x = 11,628.24 × 2,560.80
  4. Step 4: Simplify right side
    7,751.52x = 29,777,596.99
  5. Step 5: Solve for x
    x = 29,777,596.99/7,751.52
  6. Step 6: Final answer
    x = 3,841.52

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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.