Home / 3,445.50-5,161.70-1,965.75

Finding the Fourth Proportional to 3,445.50, 5,161.70 and 1,965.75

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Solution

The fourth proportional to 3,445.50, 5,161.70 and 1,965.75 is: 2,944.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.50 : 5,161.70 = 1,965.75 : x
  2. Step 2: Convert to fraction form
    3,445.50/5,161.70 = 1,965.75/x
  3. Step 3: Cross multiply
    3,445.50x = 5,161.70 × 1,965.75
  4. Step 4: Simplify right side
    3,445.50x = 10,146,601.95
  5. Step 5: Solve for x
    x = 10,146,601.95/3,445.50
  6. Step 6: Final answer
    x = 2,944.89

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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.