Home / 3,487.98-5,231.94-1,639.92

Finding the Fourth Proportional to 3,487.98, 5,231.94 and 1,639.92

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Solution

The fourth proportional to 3,487.98, 5,231.94 and 1,639.92 is: 2,459.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.98 : 5,231.94 = 1,639.92 : x
  2. Step 2: Convert to fraction form
    3,487.98/5,231.94 = 1,639.92/x
  3. Step 3: Cross multiply
    3,487.98x = 5,231.94 × 1,639.92
  4. Step 4: Simplify right side
    3,487.98x = 8,579,963.04
  5. Step 5: Solve for x
    x = 8,579,963.04/3,487.98
  6. Step 6: Final answer
    x = 2,459.87

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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.