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Finding the Fourth Proportional to 3,241.31, 4,866.81 and 1,856.21

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Solution

The fourth proportional to 3,241.31, 4,866.81 and 1,856.21 is: 2,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,241.31 : 4,866.81 = 1,856.21 : x
  2. Step 2: Convert to fraction form
    3,241.31/4,866.81 = 1,856.21/x
  3. Step 3: Cross multiply
    3,241.31x = 4,866.81 × 1,856.21
  4. Step 4: Simplify right side
    3,241.31x = 9,033,797.06
  5. Step 5: Solve for x
    x = 9,033,797.06/3,241.31
  6. Step 6: Final answer
    x = 2,787.09

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1.5x scale

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.