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Finding the Fourth Proportional to 8,882.78, 12,310.08 and 8,757.50

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Solution

The fourth proportional to 8,882.78, 12,310.08 and 8,757.50 is: 12,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,882.78 : 12,310.08 = 8,757.50 : x
  2. Step 2: Convert to fraction form
    8,882.78/12,310.08 = 8,757.50/x
  3. Step 3: Cross multiply
    8,882.78x = 12,310.08 × 8,757.50
  4. Step 4: Simplify right side
    8,882.78x = 107,805,525.60
  5. Step 5: Solve for x
    x = 107,805,525.60/8,882.78
  6. Step 6: Final answer
    x = 12,136.46

Related Problems

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Half scale
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Double scale
Find fourth proportional to 8,883.78, 12,311.47 and 8,758.50
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.