Home / 9,144.92-12,620.76-5,166.20

Finding the Fourth Proportional to 9,144.92, 12,620.76 and 5,166.20

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Solution

The fourth proportional to 9,144.92, 12,620.76 and 5,166.20 is: 7,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,144.92 : 12,620.76 = 5,166.20 : x
  2. Step 2: Convert to fraction form
    9,144.92/12,620.76 = 5,166.20/x
  3. Step 3: Cross multiply
    9,144.92x = 12,620.76 × 5,166.20
  4. Step 4: Simplify right side
    9,144.92x = 65,201,370.31
  5. Step 5: Solve for x
    x = 65,201,370.31/9,144.92
  6. Step 6: Final answer
    x = 7,129.79

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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.