Home / 3,231.70-4,460.34-1,972.78

Finding the Fourth Proportional to 3,231.70, 4,460.34 and 1,972.78

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Solution

The fourth proportional to 3,231.70, 4,460.34 and 1,972.78 is: 2,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.70 : 4,460.34 = 1,972.78 : x
  2. Step 2: Convert to fraction form
    3,231.70/4,460.34 = 1,972.78/x
  3. Step 3: Cross multiply
    3,231.70x = 4,460.34 × 1,972.78
  4. Step 4: Simplify right side
    3,231.70x = 8,799,269.55
  5. Step 5: Solve for x
    x = 8,799,269.55/3,231.70
  6. Step 6: Final answer
    x = 2,722.80

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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.