Home / 3,170.50-4,755.75-1,118.50

Finding the Fourth Proportional to 3,170.50, 4,755.75 and 1,118.50

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Solution

The fourth proportional to 3,170.50, 4,755.75 and 1,118.50 is: 1,677.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.50 : 4,755.75 = 1,118.50 : x
  2. Step 2: Convert to fraction form
    3,170.50/4,755.75 = 1,118.50/x
  3. Step 3: Cross multiply
    3,170.50x = 4,755.75 × 1,118.50
  4. Step 4: Simplify right side
    3,170.50x = 5,319,306.38
  5. Step 5: Solve for x
    x = 5,319,306.38/3,170.50
  6. Step 6: Final answer
    x = 1,677.75

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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.