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Finding the Fourth Proportional to 3,954.36, 5,931.54 and 2,487.72

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Solution

The fourth proportional to 3,954.36, 5,931.54 and 2,487.72 is: 3,731.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,954.36 : 5,931.54 = 2,487.72 : x
  2. Step 2: Convert to fraction form
    3,954.36/5,931.54 = 2,487.72/x
  3. Step 3: Cross multiply
    3,954.36x = 5,931.54 × 2,487.72
  4. Step 4: Simplify right side
    3,954.36x = 14,756,010.69
  5. Step 5: Solve for x
    x = 14,756,010.69/3,954.36
  6. Step 6: Final answer
    x = 3,731.58

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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.