Home / 5,167.80-7,131.46-2,810

Finding the Fourth Proportional to 5,167.80, 7,131.46 and 2,810

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Solution

The fourth proportional to 5,167.80, 7,131.46 and 2,810 is: 3,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.80 : 7,131.46 = 2,810 : x
  2. Step 2: Convert to fraction form
    5,167.80/7,131.46 = 2,810/x
  3. Step 3: Cross multiply
    5,167.80x = 7,131.46 × 2,810
  4. Step 4: Simplify right side
    5,167.80x = 20,039,402.60
  5. Step 5: Solve for x
    x = 20,039,402.60/5,167.80
  6. Step 6: Final answer
    x = 3,877.74

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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.