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Finding the Fourth Proportional to 3,432.72, 5,149.06 and 835.62

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Solution

The fourth proportional to 3,432.72, 5,149.06 and 835.62 is: 1,253.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.72 : 5,149.06 = 835.62 : x
  2. Step 2: Convert to fraction form
    3,432.72/5,149.06 = 835.62/x
  3. Step 3: Cross multiply
    3,432.72x = 5,149.06 × 835.62
  4. Step 4: Simplify right side
    3,432.72x = 4,302,657.52
  5. Step 5: Solve for x
    x = 4,302,657.52/3,432.72
  6. Step 6: Final answer
    x = 1,253.43

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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.