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Finding the Fourth Proportional to 3,418.76, 4,718.34 and 1,927

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Solution

The fourth proportional to 3,418.76, 4,718.34 and 1,927 is: 2,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.76 : 4,718.34 = 1,927 : x
  2. Step 2: Convert to fraction form
    3,418.76/4,718.34 = 1,927/x
  3. Step 3: Cross multiply
    3,418.76x = 4,718.34 × 1,927
  4. Step 4: Simplify right side
    3,418.76x = 9,092,241.18
  5. Step 5: Solve for x
    x = 9,092,241.18/3,418.76
  6. Step 6: Final answer
    x = 2,659.51

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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.