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Finding the Fourth Proportional to 8,559.96, 11,832.66 and 8,211.12

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Solution

The fourth proportional to 8,559.96, 11,832.66 and 8,211.12 is: 11,350.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.96 : 11,832.66 = 8,211.12 : x
  2. Step 2: Convert to fraction form
    8,559.96/11,832.66 = 8,211.12/x
  3. Step 3: Cross multiply
    8,559.96x = 11,832.66 × 8,211.12
  4. Step 4: Simplify right side
    8,559.96x = 97,159,391.18
  5. Step 5: Solve for x
    x = 97,159,391.18/8,559.96
  6. Step 6: Final answer
    x = 11,350.45

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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.