Home / 2,872.19-3,963.62-1,630.19

Finding the Fourth Proportional to 2,872.19, 3,963.62 and 1,630.19

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Solution

The fourth proportional to 2,872.19, 3,963.62 and 1,630.19 is: 2,249.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.19 : 3,963.62 = 1,630.19 : x
  2. Step 2: Convert to fraction form
    2,872.19/3,963.62 = 1,630.19/x
  3. Step 3: Cross multiply
    2,872.19x = 3,963.62 × 1,630.19
  4. Step 4: Simplify right side
    2,872.19x = 6,461,453.69
  5. Step 5: Solve for x
    x = 6,461,453.69/2,872.19
  6. Step 6: Final answer
    x = 2,249.66

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Half scale
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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.