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Finding the Fourth Proportional to 8,271.87, 12,402.81 and 3,335.76

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Solution

The fourth proportional to 8,271.87, 12,402.81 and 3,335.76 is: 5,001.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.87 : 12,402.81 = 3,335.76 : x
  2. Step 2: Convert to fraction form
    8,271.87/12,402.81 = 3,335.76/x
  3. Step 3: Cross multiply
    8,271.87x = 12,402.81 × 3,335.76
  4. Step 4: Simplify right side
    8,271.87x = 41,372,797.49
  5. Step 5: Solve for x
    x = 41,372,797.49/8,271.87
  6. Step 6: Final answer
    x = 5,001.63

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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.