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Finding the Fourth Proportional to 9,179.88, 12,668.50 and 6,495.90

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Solution

The fourth proportional to 9,179.88, 12,668.50 and 6,495.90 is: 8,964.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.88 : 12,668.50 = 6,495.90 : x
  2. Step 2: Convert to fraction form
    9,179.88/12,668.50 = 6,495.90/x
  3. Step 3: Cross multiply
    9,179.88x = 12,668.50 × 6,495.90
  4. Step 4: Simplify right side
    9,179.88x = 82,293,309.15
  5. Step 5: Solve for x
    x = 82,293,309.15/9,179.88
  6. Step 6: Final answer
    x = 8,964.53

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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.