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Finding the Fourth Proportional to 7,481, 11,221.95 and 2,286.92

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Solution

The fourth proportional to 7,481, 11,221.95 and 2,286.92 is: 3,430.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481 : 11,221.95 = 2,286.92 : x
  2. Step 2: Convert to fraction form
    7,481/11,221.95 = 2,286.92/x
  3. Step 3: Cross multiply
    7,481x = 11,221.95 × 2,286.92
  4. Step 4: Simplify right side
    7,481x = 25,663,701.89
  5. Step 5: Solve for x
    x = 25,663,701.89/7,481
  6. Step 6: Final answer
    x = 3,430.52

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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.