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Finding the Fourth Proportional to 7,695.05, 10,627.93 and 5,172.79

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Solution

The fourth proportional to 7,695.05, 10,627.93 and 5,172.79 is: 7,144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,695.05 : 10,627.93 = 5,172.79 : x
  2. Step 2: Convert to fraction form
    7,695.05/10,627.93 = 5,172.79/x
  3. Step 3: Cross multiply
    7,695.05x = 10,627.93 × 5,172.79
  4. Step 4: Simplify right side
    7,695.05x = 54,976,049.85
  5. Step 5: Solve for x
    x = 54,976,049.85/7,695.05
  6. Step 6: Final answer
    x = 7,144.34

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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.