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Finding the Fourth Proportional to 6,139.54, 9,212.03 and 3,217.15

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Solution

The fourth proportional to 6,139.54, 9,212.03 and 3,217.15 is: 4,827.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.54 : 9,212.03 = 3,217.15 : x
  2. Step 2: Convert to fraction form
    6,139.54/9,212.03 = 3,217.15/x
  3. Step 3: Cross multiply
    6,139.54x = 9,212.03 × 3,217.15
  4. Step 4: Simplify right side
    6,139.54x = 29,636,420.17
  5. Step 5: Solve for x
    x = 29,636,420.17/6,139.54
  6. Step 6: Final answer
    x = 4,827.14

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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.