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Finding the Fourth Proportional to 4,287.18, 5,919.12 and 2,872.71

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Solution

The fourth proportional to 4,287.18, 5,919.12 and 2,872.71 is: 3,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.18 : 5,919.12 = 2,872.71 : x
  2. Step 2: Convert to fraction form
    4,287.18/5,919.12 = 2,872.71/x
  3. Step 3: Cross multiply
    4,287.18x = 5,919.12 × 2,872.71
  4. Step 4: Simplify right side
    4,287.18x = 17,003,915.22
  5. Step 5: Solve for x
    x = 17,003,915.22/4,287.18
  6. Step 6: Final answer
    x = 3,966.22

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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.