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Finding the Fourth Proportional to 8,903.61, 13,351.77 and 3,969.87

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Solution

The fourth proportional to 8,903.61, 13,351.77 and 3,969.87 is: 5,953.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,903.61 : 13,351.77 = 3,969.87 : x
  2. Step 2: Convert to fraction form
    8,903.61/13,351.77 = 3,969.87/x
  3. Step 3: Cross multiply
    8,903.61x = 13,351.77 × 3,969.87
  4. Step 4: Simplify right side
    8,903.61x = 53,004,791.17
  5. Step 5: Solve for x
    x = 53,004,791.17/8,903.61
  6. Step 6: Final answer
    x = 5,953.18

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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.