Home / 2,781.24-4,170.60-1,136.40

Finding the Fourth Proportional to 2,781.24, 4,170.60 and 1,136.40

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Solution

The fourth proportional to 2,781.24, 4,170.60 and 1,136.40 is: 1,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.24 : 4,170.60 = 1,136.40 : x
  2. Step 2: Convert to fraction form
    2,781.24/4,170.60 = 1,136.40/x
  3. Step 3: Cross multiply
    2,781.24x = 4,170.60 × 1,136.40
  4. Step 4: Simplify right side
    2,781.24x = 4,739,469.84
  5. Step 5: Solve for x
    x = 4,739,469.84/2,781.24
  6. Step 6: Final answer
    x = 1,704.09

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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.