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Finding the Fourth Proportional to 4,418.78, 6,631.52 and 1,955.16

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Solution

The fourth proportional to 4,418.78, 6,631.52 and 1,955.16 is: 2,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,418.78 : 6,631.52 = 1,955.16 : x
  2. Step 2: Convert to fraction form
    4,418.78/6,631.52 = 1,955.16/x
  3. Step 3: Cross multiply
    4,418.78x = 6,631.52 × 1,955.16
  4. Step 4: Simplify right side
    4,418.78x = 12,965,672.87
  5. Step 5: Solve for x
    x = 12,965,672.87/4,418.78
  6. Step 6: Final answer
    x = 2,934.22

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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.