Home / 1,821.85-2,514.15-1,025.21

Finding the Fourth Proportional to 1,821.85, 2,514.15 and 1,025.21

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Solution

The fourth proportional to 1,821.85, 2,514.15 and 1,025.21 is: 1,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.85 : 2,514.15 = 1,025.21 : x
  2. Step 2: Convert to fraction form
    1,821.85/2,514.15 = 1,025.21/x
  3. Step 3: Cross multiply
    1,821.85x = 2,514.15 × 1,025.21
  4. Step 4: Simplify right side
    1,821.85x = 2,577,531.72
  5. Step 5: Solve for x
    x = 2,577,531.72/1,821.85
  6. Step 6: Final answer
    x = 1,414.79

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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.