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Finding the Fourth Proportional to 7,791.19, 10,751.91 and 4,254.47

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Solution

The fourth proportional to 7,791.19, 10,751.91 and 4,254.47 is: 5,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.19 : 10,751.91 = 4,254.47 : x
  2. Step 2: Convert to fraction form
    7,791.19/10,751.91 = 4,254.47/x
  3. Step 3: Cross multiply
    7,791.19x = 10,751.91 × 4,254.47
  4. Step 4: Simplify right side
    7,791.19x = 45,743,745.52
  5. Step 5: Solve for x
    x = 45,743,745.52/7,791.19
  6. Step 6: Final answer
    x = 5,871.22

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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.