Home / 3,678.15-5,515.43-1,305.43

Finding the Fourth Proportional to 3,678.15, 5,515.43 and 1,305.43

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Solution

The fourth proportional to 3,678.15, 5,515.43 and 1,305.43 is: 1,957.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.15 : 5,515.43 = 1,305.43 : x
  2. Step 2: Convert to fraction form
    3,678.15/5,515.43 = 1,305.43/x
  3. Step 3: Cross multiply
    3,678.15x = 5,515.43 × 1,305.43
  4. Step 4: Simplify right side
    3,678.15x = 7,199,997.26
  5. Step 5: Solve for x
    x = 7,199,997.26/3,678.15
  6. Step 6: Final answer
    x = 1,957.51

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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.