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Finding the Fourth Proportional to 9,179.44, 12,668.72 and 5,453.44

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Solution

The fourth proportional to 9,179.44, 12,668.72 and 5,453.44 is: 7,526.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.44 : 12,668.72 = 5,453.44 : x
  2. Step 2: Convert to fraction form
    9,179.44/12,668.72 = 5,453.44/x
  3. Step 3: Cross multiply
    9,179.44x = 12,668.72 × 5,453.44
  4. Step 4: Simplify right side
    9,179.44x = 69,088,045.46
  5. Step 5: Solve for x
    x = 69,088,045.46/9,179.44
  6. Step 6: Final answer
    x = 7,526.39

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Half scale
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Double scale
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Similar ratio
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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.