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Finding the Fourth Proportional to 2,585.66, 3,878.16 and 1,180.52

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Solution

The fourth proportional to 2,585.66, 3,878.16 and 1,180.52 is: 1,770.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.66 : 3,878.16 = 1,180.52 : x
  2. Step 2: Convert to fraction form
    2,585.66/3,878.16 = 1,180.52/x
  3. Step 3: Cross multiply
    2,585.66x = 3,878.16 × 1,180.52
  4. Step 4: Simplify right side
    2,585.66x = 4,578,245.44
  5. Step 5: Solve for x
    x = 4,578,245.44/2,585.66
  6. Step 6: Final answer
    x = 1,770.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.