Home / 3,900.66-5,382.88-2,199.01

Finding the Fourth Proportional to 3,900.66, 5,382.88 and 2,199.01

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Solution

The fourth proportional to 3,900.66, 5,382.88 and 2,199.01 is: 3,034.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.66 : 5,382.88 = 2,199.01 : x
  2. Step 2: Convert to fraction form
    3,900.66/5,382.88 = 2,199.01/x
  3. Step 3: Cross multiply
    3,900.66x = 5,382.88 × 2,199.01
  4. Step 4: Simplify right side
    3,900.66x = 11,837,006.95
  5. Step 5: Solve for x
    x = 11,837,006.95/3,900.66
  6. Step 6: Final answer
    x = 3,034.62

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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.