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Finding the Fourth Proportional to 3,432.86, 5,149.22 and 835.78

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Solution

The fourth proportional to 3,432.86, 5,149.22 and 835.78 is: 1,253.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432.86 : 5,149.22 = 835.78 : x
  2. Step 2: Convert to fraction form
    3,432.86/5,149.22 = 835.78/x
  3. Step 3: Cross multiply
    3,432.86x = 5,149.22 × 835.78
  4. Step 4: Simplify right side
    3,432.86x = 4,303,615.09
  5. Step 5: Solve for x
    x = 4,303,615.09/3,432.86
  6. Step 6: Final answer
    x = 1,253.65

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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.