Home / 5,147.19-7,102.62-2,908.76

Finding the Fourth Proportional to 5,147.19, 7,102.62 and 2,908.76

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Solution

The fourth proportional to 5,147.19, 7,102.62 and 2,908.76 is: 4,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.19 : 7,102.62 = 2,908.76 : x
  2. Step 2: Convert to fraction form
    5,147.19/7,102.62 = 2,908.76/x
  3. Step 3: Cross multiply
    5,147.19x = 7,102.62 × 2,908.76
  4. Step 4: Simplify right side
    5,147.19x = 20,659,781.44
  5. Step 5: Solve for x
    x = 20,659,781.44/5,147.19
  6. Step 6: Final answer
    x = 4,013.80

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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.