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Finding the Fourth Proportional to 3,418.94, 4,718.25 and 1,926.99

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Solution

The fourth proportional to 3,418.94, 4,718.25 and 1,926.99 is: 2,659.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.94 : 4,718.25 = 1,926.99 : x
  2. Step 2: Convert to fraction form
    3,418.94/4,718.25 = 1,926.99/x
  3. Step 3: Cross multiply
    3,418.94x = 4,718.25 × 1,926.99
  4. Step 4: Simplify right side
    3,418.94x = 9,092,020.57
  5. Step 5: Solve for x
    x = 9,092,020.57/3,418.94
  6. Step 6: Final answer
    x = 2,659.31

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Why These Related Problems?

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