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Finding the Fourth Proportional to 2,808.46, 3,876.02 and 1,689.98

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Solution

The fourth proportional to 2,808.46, 3,876.02 and 1,689.98 is: 2,332.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.46 : 3,876.02 = 1,689.98 : x
  2. Step 2: Convert to fraction form
    2,808.46/3,876.02 = 1,689.98/x
  3. Step 3: Cross multiply
    2,808.46x = 3,876.02 × 1,689.98
  4. Step 4: Simplify right side
    2,808.46x = 6,550,396.28
  5. Step 5: Solve for x
    x = 6,550,396.28/2,808.46
  6. Step 6: Final answer
    x = 2,332.38

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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.