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Finding the Fourth Proportional to 6,441.99, 8,891.69 and 3,790.25

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Solution

The fourth proportional to 6,441.99, 8,891.69 and 3,790.25 is: 5,231.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.99 : 8,891.69 = 3,790.25 : x
  2. Step 2: Convert to fraction form
    6,441.99/8,891.69 = 3,790.25/x
  3. Step 3: Cross multiply
    6,441.99x = 8,891.69 × 3,790.25
  4. Step 4: Simplify right side
    6,441.99x = 33,701,726.38
  5. Step 5: Solve for x
    x = 33,701,726.38/6,441.99
  6. Step 6: Final answer
    x = 5,231.57

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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.