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Finding the Fourth Proportional to 7,177.63, 9,908.49 and 4,791.63

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Solution

The fourth proportional to 7,177.63, 9,908.49 and 4,791.63 is: 6,614.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.63 : 9,908.49 = 4,791.63 : x
  2. Step 2: Convert to fraction form
    7,177.63/9,908.49 = 4,791.63/x
  3. Step 3: Cross multiply
    7,177.63x = 9,908.49 × 4,791.63
  4. Step 4: Simplify right side
    7,177.63x = 47,477,817.94
  5. Step 5: Solve for x
    x = 47,477,817.94/7,177.63
  6. Step 6: Final answer
    x = 6,614.69

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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.