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Finding the Fourth Proportional to 8,937.21, 13,405.85 and 3,739.44

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Solution

The fourth proportional to 8,937.21, 13,405.85 and 3,739.44 is: 5,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.21 : 13,405.85 = 3,739.44 : x
  2. Step 2: Convert to fraction form
    8,937.21/13,405.85 = 3,739.44/x
  3. Step 3: Cross multiply
    8,937.21x = 13,405.85 × 3,739.44
  4. Step 4: Simplify right side
    8,937.21x = 50,130,371.72
  5. Step 5: Solve for x
    x = 50,130,371.72/8,937.21
  6. Step 6: Final answer
    x = 5,609.17

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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.