Home / 5,136.00-7,087.65-2,778.09

Finding the Fourth Proportional to 5,136.00, 7,087.65 and 2,778.09

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Solution

The fourth proportional to 5,136.00, 7,087.65 and 2,778.09 is: 3,833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.00 : 7,087.65 = 2,778.09 : x
  2. Step 2: Convert to fraction form
    5,136.00/7,087.65 = 2,778.09/x
  3. Step 3: Cross multiply
    5,136.00x = 7,087.65 × 2,778.09
  4. Step 4: Simplify right side
    5,136.00x = 19,690,147.31
  5. Step 5: Solve for x
    x = 19,690,147.31/5,136.00
  6. Step 6: Final answer
    x = 3,833.75

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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.