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Finding the Fourth Proportional to 3,959.66, 5,464.16 and 2,167.11

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Solution

The fourth proportional to 3,959.66, 5,464.16 and 2,167.11 is: 2,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.66 : 5,464.16 = 2,167.11 : x
  2. Step 2: Convert to fraction form
    3,959.66/5,464.16 = 2,167.11/x
  3. Step 3: Cross multiply
    3,959.66x = 5,464.16 × 2,167.11
  4. Step 4: Simplify right side
    3,959.66x = 11,841,424.94
  5. Step 5: Solve for x
    x = 11,841,424.94/3,959.66
  6. Step 6: Final answer
    x = 2,990.51

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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.