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Finding the Fourth Proportional to 3,366, 4,645.56 and 3,218.40

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Solution

The fourth proportional to 3,366, 4,645.56 and 3,218.40 is: 4,441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,366 : 4,645.56 = 3,218.40 : x
  2. Step 2: Convert to fraction form
    3,366/4,645.56 = 3,218.40/x
  3. Step 3: Cross multiply
    3,366x = 4,645.56 × 3,218.40
  4. Step 4: Simplify right side
    3,366x = 14,951,270.30
  5. Step 5: Solve for x
    x = 14,951,270.30/3,366
  6. Step 6: Final answer
    x = 4,441.85

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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.