Home / 8,736.87-12,055-5,199.39

Finding the Fourth Proportional to 8,736.87, 12,055 and 5,199.39

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Solution

The fourth proportional to 8,736.87, 12,055 and 5,199.39 is: 7,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.87 : 12,055 = 5,199.39 : x
  2. Step 2: Convert to fraction form
    8,736.87/12,055 = 5,199.39/x
  3. Step 3: Cross multiply
    8,736.87x = 12,055 × 5,199.39
  4. Step 4: Simplify right side
    8,736.87x = 62,678,646.45
  5. Step 5: Solve for x
    x = 62,678,646.45/8,736.87
  6. Step 6: Final answer
    x = 7,174.04

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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.