Home / 5,177.15-7,144.47-2,819.28

Finding the Fourth Proportional to 5,177.15, 7,144.47 and 2,819.28

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Solution

The fourth proportional to 5,177.15, 7,144.47 and 2,819.28 is: 3,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.15 : 7,144.47 = 2,819.28 : x
  2. Step 2: Convert to fraction form
    5,177.15/7,144.47 = 2,819.28/x
  3. Step 3: Cross multiply
    5,177.15x = 7,144.47 × 2,819.28
  4. Step 4: Simplify right side
    5,177.15x = 20,142,261.38
  5. Step 5: Solve for x
    x = 20,142,261.38/5,177.15
  6. Step 6: Final answer
    x = 3,890.61

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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.