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Finding the Fourth Proportional to 8,553.78, 11,776.77 and 7,449.30

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Solution

The fourth proportional to 8,553.78, 11,776.77 and 7,449.30 is: 10,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553.78 : 11,776.77 = 7,449.30 : x
  2. Step 2: Convert to fraction form
    8,553.78/11,776.77 = 7,449.30/x
  3. Step 3: Cross multiply
    8,553.78x = 11,776.77 × 7,449.30
  4. Step 4: Simplify right side
    8,553.78x = 87,728,692.76
  5. Step 5: Solve for x
    x = 87,728,692.76/8,553.78
  6. Step 6: Final answer
    x = 10,256.13

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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.