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Finding the Fourth Proportional to 5,791.84, 7,992.76 and 3,139.24

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Solution

The fourth proportional to 5,791.84, 7,992.76 and 3,139.24 is: 4,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,791.84 : 7,992.76 = 3,139.24 : x
  2. Step 2: Convert to fraction form
    5,791.84/7,992.76 = 3,139.24/x
  3. Step 3: Cross multiply
    5,791.84x = 7,992.76 × 3,139.24
  4. Step 4: Simplify right side
    5,791.84x = 25,091,191.90
  5. Step 5: Solve for x
    x = 25,091,191.90/5,791.84
  6. Step 6: Final answer
    x = 4,332.16

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1.5x scale

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.