Home / 2,790.15-3,850.23-1,531.14

Finding the Fourth Proportional to 2,790.15, 3,850.23 and 1,531.14

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Solution

The fourth proportional to 2,790.15, 3,850.23 and 1,531.14 is: 2,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.15 : 3,850.23 = 1,531.14 : x
  2. Step 2: Convert to fraction form
    2,790.15/3,850.23 = 1,531.14/x
  3. Step 3: Cross multiply
    2,790.15x = 3,850.23 × 1,531.14
  4. Step 4: Simplify right side
    2,790.15x = 5,895,241.16
  5. Step 5: Solve for x
    x = 5,895,241.16/2,790.15
  6. Step 6: Final answer
    x = 2,112.88

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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.