Home / 1,781.96-2,672.85-1,197.21

Finding the Fourth Proportional to 1,781.96, 2,672.85 and 1,197.21

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Solution

The fourth proportional to 1,781.96, 2,672.85 and 1,197.21 is: 1,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.96 : 2,672.85 = 1,197.21 : x
  2. Step 2: Convert to fraction form
    1,781.96/2,672.85 = 1,197.21/x
  3. Step 3: Cross multiply
    1,781.96x = 2,672.85 × 1,197.21
  4. Step 4: Simplify right side
    1,781.96x = 3,199,962.75
  5. Step 5: Solve for x
    x = 3,199,962.75/1,781.96
  6. Step 6: Final answer
    x = 1,795.75

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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.