Home / 5,136.83-7,088.78-2,778.92

Finding the Fourth Proportional to 5,136.83, 7,088.78 and 2,778.92

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Solution

The fourth proportional to 5,136.83, 7,088.78 and 2,778.92 is: 3,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.83 : 7,088.78 = 2,778.92 : x
  2. Step 2: Convert to fraction form
    5,136.83/7,088.78 = 2,778.92/x
  3. Step 3: Cross multiply
    5,136.83x = 7,088.78 × 2,778.92
  4. Step 4: Simplify right side
    5,136.83x = 19,699,138.62
  5. Step 5: Solve for x
    x = 19,699,138.62/5,136.83
  6. Step 6: Final answer
    x = 3,834.88

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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.