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Finding the Fourth Proportional to 2,868, 3,958.32 and 2,168.16

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Solution

The fourth proportional to 2,868, 3,958.32 and 2,168.16 is: 2,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868 : 3,958.32 = 2,168.16 : x
  2. Step 2: Convert to fraction form
    2,868/3,958.32 = 2,168.16/x
  3. Step 3: Cross multiply
    2,868x = 3,958.32 × 2,168.16
  4. Step 4: Simplify right side
    2,868x = 8,582,271.09
  5. Step 5: Solve for x
    x = 8,582,271.09/2,868
  6. Step 6: Final answer
    x = 2,992.42

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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.