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Finding the Fourth Proportional to 3,162, 4,363.56 and 2,114.40

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Solution

The fourth proportional to 3,162, 4,363.56 and 2,114.40 is: 2,917.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162 : 4,363.56 = 2,114.40 : x
  2. Step 2: Convert to fraction form
    3,162/4,363.56 = 2,114.40/x
  3. Step 3: Cross multiply
    3,162x = 4,363.56 × 2,114.40
  4. Step 4: Simplify right side
    3,162x = 9,226,311.26
  5. Step 5: Solve for x
    x = 9,226,311.26/3,162
  6. Step 6: Final answer
    x = 2,917.87

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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.