Home / 5,167.91-7,131.68-2,810.06

Finding the Fourth Proportional to 5,167.91, 7,131.68 and 2,810.06

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Solution

The fourth proportional to 5,167.91, 7,131.68 and 2,810.06 is: 3,877.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.91 : 7,131.68 = 2,810.06 : x
  2. Step 2: Convert to fraction form
    5,167.91/7,131.68 = 2,810.06/x
  3. Step 3: Cross multiply
    5,167.91x = 7,131.68 × 2,810.06
  4. Step 4: Simplify right side
    5,167.91x = 20,040,420.07
  5. Step 5: Solve for x
    x = 20,040,420.07/5,167.91
  6. Step 6: Final answer
    x = 3,877.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.