Home / 2,872.42-3,963.85-1,613.37

Finding the Fourth Proportional to 2,872.42, 3,963.85 and 1,613.37

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Solution

The fourth proportional to 2,872.42, 3,963.85 and 1,613.37 is: 2,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.42 : 3,963.85 = 1,613.37 : x
  2. Step 2: Convert to fraction form
    2,872.42/3,963.85 = 1,613.37/x
  3. Step 3: Cross multiply
    2,872.42x = 3,963.85 × 1,613.37
  4. Step 4: Simplify right side
    2,872.42x = 6,395,156.67
  5. Step 5: Solve for x
    x = 6,395,156.67/2,872.42
  6. Step 6: Final answer
    x = 2,226.40

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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.