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Finding the Fourth Proportional to 2,415.80, 3,618.30 and 2,361.80

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Solution

The fourth proportional to 2,415.80, 3,618.30 and 2,361.80 is: 3,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.80 : 3,618.30 = 2,361.80 : x
  2. Step 2: Convert to fraction form
    2,415.80/3,618.30 = 2,361.80/x
  3. Step 3: Cross multiply
    2,415.80x = 3,618.30 × 2,361.80
  4. Step 4: Simplify right side
    2,415.80x = 8,545,700.94
  5. Step 5: Solve for x
    x = 8,545,700.94/2,415.80
  6. Step 6: Final answer
    x = 3,537.42

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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.