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Finding the Fourth Proportional to 2,542.51, 3,813.78 and 899.08

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Solution

The fourth proportional to 2,542.51, 3,813.78 and 899.08 is: 1,348.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.51 : 3,813.78 = 899.08 : x
  2. Step 2: Convert to fraction form
    2,542.51/3,813.78 = 899.08/x
  3. Step 3: Cross multiply
    2,542.51x = 3,813.78 × 899.08
  4. Step 4: Simplify right side
    2,542.51x = 3,428,893.32
  5. Step 5: Solve for x
    x = 3,428,893.32/2,542.51
  6. Step 6: Final answer
    x = 1,348.63

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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.