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Finding the Fourth Proportional to 8,359.84, 12,542.95 and 3,919.93

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Solution

The fourth proportional to 8,359.84, 12,542.95 and 3,919.93 is: 5,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,359.84 : 12,542.95 = 3,919.93 : x
  2. Step 2: Convert to fraction form
    8,359.84/12,542.95 = 3,919.93/x
  3. Step 3: Cross multiply
    8,359.84x = 12,542.95 × 3,919.93
  4. Step 4: Simplify right side
    8,359.84x = 49,167,459.54
  5. Step 5: Solve for x
    x = 49,167,459.54/8,359.84
  6. Step 6: Final answer
    x = 5,881.39

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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.