Home / 3,781.12-5,672.40-1,184.80

Finding the Fourth Proportional to 3,781.12, 5,672.40 and 1,184.80

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Solution

The fourth proportional to 3,781.12, 5,672.40 and 1,184.80 is: 1,777.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.12 : 5,672.40 = 1,184.80 : x
  2. Step 2: Convert to fraction form
    3,781.12/5,672.40 = 1,184.80/x
  3. Step 3: Cross multiply
    3,781.12x = 5,672.40 × 1,184.80
  4. Step 4: Simplify right side
    3,781.12x = 6,720,659.52
  5. Step 5: Solve for x
    x = 6,720,659.52/3,781.12
  6. Step 6: Final answer
    x = 1,777.43

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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.