Home / 3,187.35-4,397.45-1,991.52

Finding the Fourth Proportional to 3,187.35, 4,397.45 and 1,991.52

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Solution

The fourth proportional to 3,187.35, 4,397.45 and 1,991.52 is: 2,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.35 : 4,397.45 = 1,991.52 : x
  2. Step 2: Convert to fraction form
    3,187.35/4,397.45 = 1,991.52/x
  3. Step 3: Cross multiply
    3,187.35x = 4,397.45 × 1,991.52
  4. Step 4: Simplify right side
    3,187.35x = 8,757,599.67
  5. Step 5: Solve for x
    x = 8,757,599.67/3,187.35
  6. Step 6: Final answer
    x = 2,747.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.