Home / 3,169.90-4,374.55-1,772.78

Finding the Fourth Proportional to 3,169.90, 4,374.55 and 1,772.78

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Solution

The fourth proportional to 3,169.90, 4,374.55 and 1,772.78 is: 2,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.90 : 4,374.55 = 1,772.78 : x
  2. Step 2: Convert to fraction form
    3,169.90/4,374.55 = 1,772.78/x
  3. Step 3: Cross multiply
    3,169.90x = 4,374.55 × 1,772.78
  4. Step 4: Simplify right side
    3,169.90x = 7,755,114.75
  5. Step 5: Solve for x
    x = 7,755,114.75/3,169.90
  6. Step 6: Final answer
    x = 2,446.49

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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.