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Finding the Fourth Proportional to 8,757.46, 12,085.20 and 4,778.74

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Solution

The fourth proportional to 8,757.46, 12,085.20 and 4,778.74 is: 6,594.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.46 : 12,085.20 = 4,778.74 : x
  2. Step 2: Convert to fraction form
    8,757.46/12,085.20 = 4,778.74/x
  3. Step 3: Cross multiply
    8,757.46x = 12,085.20 × 4,778.74
  4. Step 4: Simplify right side
    8,757.46x = 57,752,028.65
  5. Step 5: Solve for x
    x = 57,752,028.65/8,757.46
  6. Step 6: Final answer
    x = 6,594.61

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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.