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Finding the Fourth Proportional to 2,536.86, 3,805.29 and 688.03

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Solution

The fourth proportional to 2,536.86, 3,805.29 and 688.03 is: 1,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,536.86 : 3,805.29 = 688.03 : x
  2. Step 2: Convert to fraction form
    2,536.86/3,805.29 = 688.03/x
  3. Step 3: Cross multiply
    2,536.86x = 3,805.29 × 688.03
  4. Step 4: Simplify right side
    2,536.86x = 2,618,153.68
  5. Step 5: Solve for x
    x = 2,618,153.68/2,536.86
  6. Step 6: Final answer
    x = 1,032.05

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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.