Home / 2,872.08-3,961.47-1,878.51

Finding the Fourth Proportional to 2,872.08, 3,961.47 and 1,878.51

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Solution

The fourth proportional to 2,872.08, 3,961.47 and 1,878.51 is: 2,591.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.08 : 3,961.47 = 1,878.51 : x
  2. Step 2: Convert to fraction form
    2,872.08/3,961.47 = 1,878.51/x
  3. Step 3: Cross multiply
    2,872.08x = 3,961.47 × 1,878.51
  4. Step 4: Simplify right side
    2,872.08x = 7,441,661.01
  5. Step 5: Solve for x
    x = 7,441,661.01/2,872.08
  6. Step 6: Final answer
    x = 2,591.04

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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.