Home / 2,872.09-3,963.50-1,630.09

Finding the Fourth Proportional to 2,872.09, 3,963.50 and 1,630.09

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Solution

The fourth proportional to 2,872.09, 3,963.50 and 1,630.09 is: 2,249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.09 : 3,963.50 = 1,630.09 : x
  2. Step 2: Convert to fraction form
    2,872.09/3,963.50 = 1,630.09/x
  3. Step 3: Cross multiply
    2,872.09x = 3,963.50 × 1,630.09
  4. Step 4: Simplify right side
    2,872.09x = 6,460,861.72
  5. Step 5: Solve for x
    x = 6,460,861.72/2,872.09
  6. Step 6: Final answer
    x = 2,249.53

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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.