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Finding the Fourth Proportional to 8,958.70, 13,438.10 and 3,410.81

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Solution

The fourth proportional to 8,958.70, 13,438.10 and 3,410.81 is: 5,116.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,958.70 : 13,438.10 = 3,410.81 : x
  2. Step 2: Convert to fraction form
    8,958.70/13,438.10 = 3,410.81/x
  3. Step 3: Cross multiply
    8,958.70x = 13,438.10 × 3,410.81
  4. Step 4: Simplify right side
    8,958.70x = 45,834,797.59
  5. Step 5: Solve for x
    x = 45,834,797.59/8,958.70
  6. Step 6: Final answer
    x = 5,116.23

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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.