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Finding the Fourth Proportional to 7,151.63, 10,717.22 and 3,144.21

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Solution

The fourth proportional to 7,151.63, 10,717.22 and 3,144.21 is: 4,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.63 : 10,717.22 = 3,144.21 : x
  2. Step 2: Convert to fraction form
    7,151.63/10,717.22 = 3,144.21/x
  3. Step 3: Cross multiply
    7,151.63x = 10,717.22 × 3,144.21
  4. Step 4: Simplify right side
    7,151.63x = 33,697,174.58
  5. Step 5: Solve for x
    x = 33,697,174.58/7,151.63
  6. Step 6: Final answer
    x = 4,711.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.