Home / 2,872.59-3,961.94-1,878.18

Finding the Fourth Proportional to 2,872.59, 3,961.94 and 1,878.18

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Solution

The fourth proportional to 2,872.59, 3,961.94 and 1,878.18 is: 2,590.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.59 : 3,961.94 = 1,878.18 : x
  2. Step 2: Convert to fraction form
    2,872.59/3,961.94 = 1,878.18/x
  3. Step 3: Cross multiply
    2,872.59x = 3,961.94 × 1,878.18
  4. Step 4: Simplify right side
    2,872.59x = 7,441,227.08
  5. Step 5: Solve for x
    x = 7,441,227.08/2,872.59
  6. Step 6: Final answer
    x = 2,590.42

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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.