Home / 3,900.66-5,382.96-2,132.26

Finding the Fourth Proportional to 3,900.66, 5,382.96 and 2,132.26

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Solution

The fourth proportional to 3,900.66, 5,382.96 and 2,132.26 is: 2,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.66 : 5,382.96 = 2,132.26 : x
  2. Step 2: Convert to fraction form
    3,900.66/5,382.96 = 2,132.26/x
  3. Step 3: Cross multiply
    3,900.66x = 5,382.96 × 2,132.26
  4. Step 4: Simplify right side
    3,900.66x = 11,477,870.29
  5. Step 5: Solve for x
    x = 11,477,870.29/3,900.66
  6. Step 6: Final answer
    x = 2,942.55

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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.