Home / 5,416.31-8,119.00-2,131.71

Finding the Fourth Proportional to 5,416.31, 8,119.00 and 2,131.71

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Solution

The fourth proportional to 5,416.31, 8,119.00 and 2,131.71 is: 3,195.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.31 : 8,119.00 = 2,131.71 : x
  2. Step 2: Convert to fraction form
    5,416.31/8,119.00 = 2,131.71/x
  3. Step 3: Cross multiply
    5,416.31x = 8,119.00 × 2,131.71
  4. Step 4: Simplify right side
    5,416.31x = 17,307,348.16
  5. Step 5: Solve for x
    x = 17,307,348.16/5,416.31
  6. Step 6: Final answer
    x = 3,195.41

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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.