Home / 8,136.72-11,226.72-4,778.40

Finding the Fourth Proportional to 8,136.72, 11,226.72 and 4,778.40

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Solution

The fourth proportional to 8,136.72, 11,226.72 and 4,778.40 is: 6,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.72 : 11,226.72 = 4,778.40 : x
  2. Step 2: Convert to fraction form
    8,136.72/11,226.72 = 4,778.40/x
  3. Step 3: Cross multiply
    8,136.72x = 11,226.72 × 4,778.40
  4. Step 4: Simplify right side
    8,136.72x = 53,645,758.85
  5. Step 5: Solve for x
    x = 53,645,758.85/8,136.72
  6. Step 6: Final answer
    x = 6,593.04

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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.