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Finding the Fourth Proportional to 7,149.77, 10,718.28 and 3,637.81

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Solution

The fourth proportional to 7,149.77, 10,718.28 and 3,637.81 is: 5,453.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.77 : 10,718.28 = 3,637.81 : x
  2. Step 2: Convert to fraction form
    7,149.77/10,718.28 = 3,637.81/x
  3. Step 3: Cross multiply
    7,149.77x = 10,718.28 × 3,637.81
  4. Step 4: Simplify right side
    7,149.77x = 38,991,104.59
  5. Step 5: Solve for x
    x = 38,991,104.59/7,149.77
  6. Step 6: Final answer
    x = 5,453.48

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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.