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Finding the Fourth Proportional to 5,792.39, 7,993.50 and 3,139.79

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Solution

The fourth proportional to 5,792.39, 7,993.50 and 3,139.79 is: 4,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,792.39 : 7,993.50 = 3,139.79 : x
  2. Step 2: Convert to fraction form
    5,792.39/7,993.50 = 3,139.79/x
  3. Step 3: Cross multiply
    5,792.39x = 7,993.50 × 3,139.79
  4. Step 4: Simplify right side
    5,792.39x = 25,097,911.37
  5. Step 5: Solve for x
    x = 25,097,911.37/5,792.39
  6. Step 6: Final answer
    x = 4,332.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.