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Finding the Fourth Proportional to 2,458.11, 3,394.94 and 1,905.26

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Solution

The fourth proportional to 2,458.11, 3,394.94 and 1,905.26 is: 2,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.11 : 3,394.94 = 1,905.26 : x
  2. Step 2: Convert to fraction form
    2,458.11/3,394.94 = 1,905.26/x
  3. Step 3: Cross multiply
    2,458.11x = 3,394.94 × 1,905.26
  4. Step 4: Simplify right side
    2,458.11x = 6,468,216.88
  5. Step 5: Solve for x
    x = 6,468,216.88/2,458.11
  6. Step 6: Final answer
    x = 2,631.38

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1.5x scale

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.