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Finding the Fourth Proportional to 3,318.88, 4,951.88 and 2,826.40

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Solution

The fourth proportional to 3,318.88, 4,951.88 and 2,826.40 is: 4,217.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.88 : 4,951.88 = 2,826.40 : x
  2. Step 2: Convert to fraction form
    3,318.88/4,951.88 = 2,826.40/x
  3. Step 3: Cross multiply
    3,318.88x = 4,951.88 × 2,826.40
  4. Step 4: Simplify right side
    3,318.88x = 13,995,993.63
  5. Step 5: Solve for x
    x = 13,995,993.63/3,318.88
  6. Step 6: Final answer
    x = 4,217.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.