Home / 5,167.36-7,131.02-2,809.54

Finding the Fourth Proportional to 5,167.36, 7,131.02 and 2,809.54

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Solution

The fourth proportional to 5,167.36, 7,131.02 and 2,809.54 is: 3,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.36 : 7,131.02 = 2,809.54 : x
  2. Step 2: Convert to fraction form
    5,167.36/7,131.02 = 2,809.54/x
  3. Step 3: Cross multiply
    5,167.36x = 7,131.02 × 2,809.54
  4. Step 4: Simplify right side
    5,167.36x = 20,034,885.93
  5. Step 5: Solve for x
    x = 20,034,885.93/5,167.36
  6. Step 6: Final answer
    x = 3,877.20

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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.