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Finding the Fourth Proportional to 3,505, 5,257.50 and 1,966.12

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Solution

The fourth proportional to 3,505, 5,257.50 and 1,966.12 is: 2,949.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505 : 5,257.50 = 1,966.12 : x
  2. Step 2: Convert to fraction form
    3,505/5,257.50 = 1,966.12/x
  3. Step 3: Cross multiply
    3,505x = 5,257.50 × 1,966.12
  4. Step 4: Simplify right side
    3,505x = 10,336,875.90
  5. Step 5: Solve for x
    x = 10,336,875.90/3,505
  6. Step 6: Final answer
    x = 2,949.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.