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Finding the Fourth Proportional to 2,618.91, 3,925.17 and 1,230.41

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Solution

The fourth proportional to 2,618.91, 3,925.17 and 1,230.41 is: 1,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.91 : 3,925.17 = 1,230.41 : x
  2. Step 2: Convert to fraction form
    2,618.91/3,925.17 = 1,230.41/x
  3. Step 3: Cross multiply
    2,618.91x = 3,925.17 × 1,230.41
  4. Step 4: Simplify right side
    2,618.91x = 4,829,548.79
  5. Step 5: Solve for x
    x = 4,829,548.79/2,618.91
  6. Step 6: Final answer
    x = 1,844.11

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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.