Home / 9,121.96-12,596.70-8,630.92

Finding the Fourth Proportional to 9,121.96, 12,596.70 and 8,630.92

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Solution

The fourth proportional to 9,121.96, 12,596.70 and 8,630.92 is: 11,918.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.96 : 12,596.70 = 8,630.92 : x
  2. Step 2: Convert to fraction form
    9,121.96/12,596.70 = 8,630.92/x
  3. Step 3: Cross multiply
    9,121.96x = 12,596.70 × 8,630.92
  4. Step 4: Simplify right side
    9,121.96x = 108,721,109.96
  5. Step 5: Solve for x
    x = 108,721,109.96/9,121.96
  6. Step 6: Final answer
    x = 11,918.61

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Half scale
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Double scale
Find fourth proportional to 9,122.96, 12,598.08 and 8,631.92
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.