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Finding the Fourth Proportional to 6,668.70, 9,200.70 and 3,874.20

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Solution

The fourth proportional to 6,668.70, 9,200.70 and 3,874.20 is: 5,345.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668.70 : 9,200.70 = 3,874.20 : x
  2. Step 2: Convert to fraction form
    6,668.70/9,200.70 = 3,874.20/x
  3. Step 3: Cross multiply
    6,668.70x = 9,200.70 × 3,874.20
  4. Step 4: Simplify right side
    6,668.70x = 35,645,351.94
  5. Step 5: Solve for x
    x = 35,645,351.94/6,668.70
  6. Step 6: Final answer
    x = 5,345.17

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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.