Home / 5,419.74-8,127.57-2,131.04

Finding the Fourth Proportional to 5,419.74, 8,127.57 and 2,131.04

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Solution

The fourth proportional to 5,419.74, 8,127.57 and 2,131.04 is: 3,195.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.74 : 8,127.57 = 2,131.04 : x
  2. Step 2: Convert to fraction form
    5,419.74/8,127.57 = 2,131.04/x
  3. Step 3: Cross multiply
    5,419.74x = 8,127.57 × 2,131.04
  4. Step 4: Simplify right side
    5,419.74x = 17,320,136.13
  5. Step 5: Solve for x
    x = 17,320,136.13/5,419.74
  6. Step 6: Final answer
    x = 3,195.75

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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.