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Finding the Fourth Proportional to 2,796.48, 3,859.16 and 1,537.64

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Solution

The fourth proportional to 2,796.48, 3,859.16 and 1,537.64 is: 2,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.48 : 3,859.16 = 1,537.64 : x
  2. Step 2: Convert to fraction form
    2,796.48/3,859.16 = 1,537.64/x
  3. Step 3: Cross multiply
    2,796.48x = 3,859.16 × 1,537.64
  4. Step 4: Simplify right side
    2,796.48x = 5,934,000.74
  5. Step 5: Solve for x
    x = 5,934,000.74/2,796.48
  6. Step 6: Final answer
    x = 2,121.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.