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Finding the Fourth Proportional to 2,515.72, 3,773.58 and 849.88

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Solution

The fourth proportional to 2,515.72, 3,773.58 and 849.88 is: 1,274.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.72 : 3,773.58 = 849.88 : x
  2. Step 2: Convert to fraction form
    2,515.72/3,773.58 = 849.88/x
  3. Step 3: Cross multiply
    2,515.72x = 3,773.58 × 849.88
  4. Step 4: Simplify right side
    2,515.72x = 3,207,090.17
  5. Step 5: Solve for x
    x = 3,207,090.17/2,515.72
  6. Step 6: Final answer
    x = 1,274.82

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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.