Home / 8,257.57-12,386.25-3,871.94

Finding the Fourth Proportional to 8,257.57, 12,386.25 and 3,871.94

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Solution

The fourth proportional to 8,257.57, 12,386.25 and 3,871.94 is: 5,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.57 : 12,386.25 = 3,871.94 : x
  2. Step 2: Convert to fraction form
    8,257.57/12,386.25 = 3,871.94/x
  3. Step 3: Cross multiply
    8,257.57x = 12,386.25 × 3,871.94
  4. Step 4: Simplify right side
    8,257.57x = 47,958,754.89
  5. Step 5: Solve for x
    x = 47,958,754.89/8,257.57
  6. Step 6: Final answer
    x = 5,807.86

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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.