Home / 3,426.68-5,136.38-1,781.58

Finding the Fourth Proportional to 3,426.68, 5,136.38 and 1,781.58

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Solution

The fourth proportional to 3,426.68, 5,136.38 and 1,781.58 is: 2,670.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.68 : 5,136.38 = 1,781.58 : x
  2. Step 2: Convert to fraction form
    3,426.68/5,136.38 = 1,781.58/x
  3. Step 3: Cross multiply
    3,426.68x = 5,136.38 × 1,781.58
  4. Step 4: Simplify right side
    3,426.68x = 9,150,871.88
  5. Step 5: Solve for x
    x = 9,150,871.88/3,426.68
  6. Step 6: Final answer
    x = 2,670.48

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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.