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Finding the Fourth Proportional to 8,088.52, 11,128.74 and 7,855.24

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Solution

The fourth proportional to 8,088.52, 11,128.74 and 7,855.24 is: 10,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,088.52 : 11,128.74 = 7,855.24 : x
  2. Step 2: Convert to fraction form
    8,088.52/11,128.74 = 7,855.24/x
  3. Step 3: Cross multiply
    8,088.52x = 11,128.74 × 7,855.24
  4. Step 4: Simplify right side
    8,088.52x = 87,418,923.60
  5. Step 5: Solve for x
    x = 87,418,923.60/8,088.52
  6. Step 6: Final answer
    x = 10,807.78

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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.