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Finding the Fourth Proportional to 2,486.25, 3,729.30 and 637.32

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Solution

The fourth proportional to 2,486.25, 3,729.30 and 637.32 is: 955.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.25 : 3,729.30 = 637.32 : x
  2. Step 2: Convert to fraction form
    2,486.25/3,729.30 = 637.32/x
  3. Step 3: Cross multiply
    2,486.25x = 3,729.30 × 637.32
  4. Step 4: Simplify right side
    2,486.25x = 2,376,757.48
  5. Step 5: Solve for x
    x = 2,376,757.48/2,486.25
  6. Step 6: Final answer
    x = 955.96

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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.