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Finding the Fourth Proportional to 8,755.28, 12,081.84 and 4,776.20

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Solution

The fourth proportional to 8,755.28, 12,081.84 and 4,776.20 is: 6,590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.28 : 12,081.84 = 4,776.20 : x
  2. Step 2: Convert to fraction form
    8,755.28/12,081.84 = 4,776.20/x
  3. Step 3: Cross multiply
    8,755.28x = 12,081.84 × 4,776.20
  4. Step 4: Simplify right side
    8,755.28x = 57,705,284.21
  5. Step 5: Solve for x
    x = 57,705,284.21/8,755.28
  6. Step 6: Final answer
    x = 6,590.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.