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Finding the Fourth Proportional to 2,486.30, 3,729.45 and 637.42

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Solution

The fourth proportional to 2,486.30, 3,729.45 and 637.42 is: 956.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.30 : 3,729.45 = 637.42 : x
  2. Step 2: Convert to fraction form
    2,486.30/3,729.45 = 637.42/x
  3. Step 3: Cross multiply
    2,486.30x = 3,729.45 × 637.42
  4. Step 4: Simplify right side
    2,486.30x = 2,377,224.96
  5. Step 5: Solve for x
    x = 2,377,224.96/2,486.30
  6. Step 6: Final answer
    x = 956.13

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1.5x scale

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.