Home / 5,167.64-7,131.36-2,809.80

Finding the Fourth Proportional to 5,167.64, 7,131.36 and 2,809.80

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Solution

The fourth proportional to 5,167.64, 7,131.36 and 2,809.80 is: 3,877.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.64 : 7,131.36 = 2,809.80 : x
  2. Step 2: Convert to fraction form
    5,167.64/7,131.36 = 2,809.80/x
  3. Step 3: Cross multiply
    5,167.64x = 7,131.36 × 2,809.80
  4. Step 4: Simplify right side
    5,167.64x = 20,037,695.33
  5. Step 5: Solve for x
    x = 20,037,695.33/5,167.64
  6. Step 6: Final answer
    x = 3,877.53

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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.