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Finding the Fourth Proportional to 8,668.22, 11,962.45 and 4,891.17

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Solution

The fourth proportional to 8,668.22, 11,962.45 and 4,891.17 is: 6,749.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.22 : 11,962.45 = 4,891.17 : x
  2. Step 2: Convert to fraction form
    8,668.22/11,962.45 = 4,891.17/x
  3. Step 3: Cross multiply
    8,668.22x = 11,962.45 × 4,891.17
  4. Step 4: Simplify right side
    8,668.22x = 58,510,360.25
  5. Step 5: Solve for x
    x = 58,510,360.25/8,668.22
  6. Step 6: Final answer
    x = 6,749.99

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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.