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Finding the Fourth Proportional to 8,349.74, 12,526.78 and 3,155.66

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Solution

The fourth proportional to 8,349.74, 12,526.78 and 3,155.66 is: 4,734.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,349.74 : 12,526.78 = 3,155.66 : x
  2. Step 2: Convert to fraction form
    8,349.74/12,526.78 = 3,155.66/x
  3. Step 3: Cross multiply
    8,349.74x = 12,526.78 × 3,155.66
  4. Step 4: Simplify right side
    8,349.74x = 39,530,258.57
  5. Step 5: Solve for x
    x = 39,530,258.57/8,349.74
  6. Step 6: Final answer
    x = 4,734.31

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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.