Home / 5,136.15-7,087.88-2,778.29

Finding the Fourth Proportional to 5,136.15, 7,087.88 and 2,778.29

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Solution

The fourth proportional to 5,136.15, 7,087.88 and 2,778.29 is: 3,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.15 : 7,087.88 = 2,778.29 : x
  2. Step 2: Convert to fraction form
    5,136.15/7,087.88 = 2,778.29/x
  3. Step 3: Cross multiply
    5,136.15x = 7,087.88 × 2,778.29
  4. Step 4: Simplify right side
    5,136.15x = 19,692,186.13
  5. Step 5: Solve for x
    x = 19,692,186.13/5,136.15
  6. Step 6: Final answer
    x = 3,834.04

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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.