Home / 5,143.82-7,098.62-2,905.79

Finding the Fourth Proportional to 5,143.82, 7,098.62 and 2,905.79

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Solution

The fourth proportional to 5,143.82, 7,098.62 and 2,905.79 is: 4,010.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.82 : 7,098.62 = 2,905.79 : x
  2. Step 2: Convert to fraction form
    5,143.82/7,098.62 = 2,905.79/x
  3. Step 3: Cross multiply
    5,143.82x = 7,098.62 × 2,905.79
  4. Step 4: Simplify right side
    5,143.82x = 20,627,142.78
  5. Step 5: Solve for x
    x = 20,627,142.78/5,143.82
  6. Step 6: Final answer
    x = 4,010.08

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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.