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Finding the Fourth Proportional to 7,124.96, 10,691.09 and 3,228.86

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Solution

The fourth proportional to 7,124.96, 10,691.09 and 3,228.86 is: 4,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.96 : 10,691.09 = 3,228.86 : x
  2. Step 2: Convert to fraction form
    7,124.96/10,691.09 = 3,228.86/x
  3. Step 3: Cross multiply
    7,124.96x = 10,691.09 × 3,228.86
  4. Step 4: Simplify right side
    7,124.96x = 34,520,032.86
  5. Step 5: Solve for x
    x = 34,520,032.86/7,124.96
  6. Step 6: Final answer
    x = 4,844.94

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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.