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Finding the Fourth Proportional to 2,658.44, 3,987.68 and 1,360.82

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Solution

The fourth proportional to 2,658.44, 3,987.68 and 1,360.82 is: 2,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.44 : 3,987.68 = 1,360.82 : x
  2. Step 2: Convert to fraction form
    2,658.44/3,987.68 = 1,360.82/x
  3. Step 3: Cross multiply
    2,658.44x = 3,987.68 × 1,360.82
  4. Step 4: Simplify right side
    2,658.44x = 5,426,487.96
  5. Step 5: Solve for x
    x = 5,426,487.96/2,658.44
  6. Step 6: Final answer
    x = 2,041.23

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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.