Home / 2,874.90-3,966.21-2,087.22

Finding the Fourth Proportional to 2,874.90, 3,966.21 and 2,087.22

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Solution

The fourth proportional to 2,874.90, 3,966.21 and 2,087.22 is: 2,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.90 : 3,966.21 = 2,087.22 : x
  2. Step 2: Convert to fraction form
    2,874.90/3,966.21 = 2,087.22/x
  3. Step 3: Cross multiply
    2,874.90x = 3,966.21 × 2,087.22
  4. Step 4: Simplify right side
    2,874.90x = 8,278,352.84
  5. Step 5: Solve for x
    x = 8,278,352.84/2,874.90
  6. Step 6: Final answer
    x = 2,879.53

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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.