Home / 3,382.21-5,072.78-1,381.10

Finding the Fourth Proportional to 3,382.21, 5,072.78 and 1,381.10

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Solution

The fourth proportional to 3,382.21, 5,072.78 and 1,381.10 is: 2,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.21 : 5,072.78 = 1,381.10 : x
  2. Step 2: Convert to fraction form
    3,382.21/5,072.78 = 1,381.10/x
  3. Step 3: Cross multiply
    3,382.21x = 5,072.78 × 1,381.10
  4. Step 4: Simplify right side
    3,382.21x = 7,006,015.31
  5. Step 5: Solve for x
    x = 7,006,015.31/3,382.21
  6. Step 6: Final answer
    x = 2,071.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.