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Finding the Fourth Proportional to 7,121.88, 10,668.45 and 5,963.46

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Solution

The fourth proportional to 7,121.88, 10,668.45 and 5,963.46 is: 8,933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.88 : 10,668.45 = 5,963.46 : x
  2. Step 2: Convert to fraction form
    7,121.88/10,668.45 = 5,963.46/x
  3. Step 3: Cross multiply
    7,121.88x = 10,668.45 × 5,963.46
  4. Step 4: Simplify right side
    7,121.88x = 63,620,874.84
  5. Step 5: Solve for x
    x = 63,620,874.84/7,121.88
  6. Step 6: Final answer
    x = 8,933.16

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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.