Home / 5,136.05-7,087.71-2,778.19

Finding the Fourth Proportional to 5,136.05, 7,087.71 and 2,778.19

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Solution

The fourth proportional to 5,136.05, 7,087.71 and 2,778.19 is: 3,833.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.05 : 7,087.71 = 2,778.19 : x
  2. Step 2: Convert to fraction form
    5,136.05/7,087.71 = 2,778.19/x
  3. Step 3: Cross multiply
    5,136.05x = 7,087.71 × 2,778.19
  4. Step 4: Simplify right side
    5,136.05x = 19,691,005.04
  5. Step 5: Solve for x
    x = 19,691,005.04/5,136.05
  6. Step 6: Final answer
    x = 3,833.88

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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.