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Finding the Fourth Proportional to 8,557.10, 11,816.88 and 8,091.16

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Solution

The fourth proportional to 8,557.10, 11,816.88 and 8,091.16 is: 11,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.10 : 11,816.88 = 8,091.16 : x
  2. Step 2: Convert to fraction form
    8,557.10/11,816.88 = 8,091.16/x
  3. Step 3: Cross multiply
    8,557.10x = 11,816.88 × 8,091.16
  4. Step 4: Simplify right side
    8,557.10x = 95,612,273.37
  5. Step 5: Solve for x
    x = 95,612,273.37/8,557.10
  6. Step 6: Final answer
    x = 11,173.45

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Double scale
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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.