Home / 5,167.28-7,130.82-2,809.42

Finding the Fourth Proportional to 5,167.28, 7,130.82 and 2,809.42

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Solution

The fourth proportional to 5,167.28, 7,130.82 and 2,809.42 is: 3,876.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.28 : 7,130.82 = 2,809.42 : x
  2. Step 2: Convert to fraction form
    5,167.28/7,130.82 = 2,809.42/x
  3. Step 3: Cross multiply
    5,167.28x = 7,130.82 × 2,809.42
  4. Step 4: Simplify right side
    5,167.28x = 20,033,432.67
  5. Step 5: Solve for x
    x = 20,033,432.67/5,167.28
  6. Step 6: Final answer
    x = 3,876.98

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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.