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Finding the Fourth Proportional to 8,358.49, 12,535.66 and 3,429.51

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Solution

The fourth proportional to 8,358.49, 12,535.66 and 3,429.51 is: 5,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.49 : 12,535.66 = 3,429.51 : x
  2. Step 2: Convert to fraction form
    8,358.49/12,535.66 = 3,429.51/x
  3. Step 3: Cross multiply
    8,358.49x = 12,535.66 × 3,429.51
  4. Step 4: Simplify right side
    8,358.49x = 42,991,171.33
  5. Step 5: Solve for x
    x = 42,991,171.33/8,358.49
  6. Step 6: Final answer
    x = 5,143.41

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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.