Home / 4,128.39-5,695.29-2,872.44

Finding the Fourth Proportional to 4,128.39, 5,695.29 and 2,872.44

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Solution

The fourth proportional to 4,128.39, 5,695.29 and 2,872.44 is: 3,962.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.39 : 5,695.29 = 2,872.44 : x
  2. Step 2: Convert to fraction form
    4,128.39/5,695.29 = 2,872.44/x
  3. Step 3: Cross multiply
    4,128.39x = 5,695.29 × 2,872.44
  4. Step 4: Simplify right side
    4,128.39x = 16,359,378.81
  5. Step 5: Solve for x
    x = 16,359,378.81/4,128.39
  6. Step 6: Final answer
    x = 3,962.65

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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.