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Finding the Fourth Proportional to 2,662, 3,674.64 and 1,916.08

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Solution

The fourth proportional to 2,662, 3,674.64 and 1,916.08 is: 2,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,662 : 3,674.64 = 1,916.08 : x
  2. Step 2: Convert to fraction form
    2,662/3,674.64 = 1,916.08/x
  3. Step 3: Cross multiply
    2,662x = 3,674.64 × 1,916.08
  4. Step 4: Simplify right side
    2,662x = 7,040,904.21
  5. Step 5: Solve for x
    x = 7,040,904.21/2,662
  6. Step 6: Final answer
    x = 2,644.97

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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.