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Finding the Fourth Proportional to 3,418.98, 4,719.36 and 2,126.48

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Solution

The fourth proportional to 3,418.98, 4,719.36 and 2,126.48 is: 2,935.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.98 : 4,719.36 = 2,126.48 : x
  2. Step 2: Convert to fraction form
    3,418.98/4,719.36 = 2,126.48/x
  3. Step 3: Cross multiply
    3,418.98x = 4,719.36 × 2,126.48
  4. Step 4: Simplify right side
    3,418.98x = 10,035,601.06
  5. Step 5: Solve for x
    x = 10,035,601.06/3,418.98
  6. Step 6: Final answer
    x = 2,935.26

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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.