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Finding the Fourth Proportional to 4,691, 6,473.70 and 2,828.12

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Solution

The fourth proportional to 4,691, 6,473.70 and 2,828.12 is: 3,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,691 : 6,473.70 = 2,828.12 : x
  2. Step 2: Convert to fraction form
    4,691/6,473.70 = 2,828.12/x
  3. Step 3: Cross multiply
    4,691x = 6,473.70 × 2,828.12
  4. Step 4: Simplify right side
    4,691x = 18,308,400.44
  5. Step 5: Solve for x
    x = 18,308,400.44/4,691
  6. Step 6: Final answer
    x = 3,902.88

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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.