Home / 3,612.43-5,418.04-1,421.79

Finding the Fourth Proportional to 3,612.43, 5,418.04 and 1,421.79

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Solution

The fourth proportional to 3,612.43, 5,418.04 and 1,421.79 is: 2,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.43 : 5,418.04 = 1,421.79 : x
  2. Step 2: Convert to fraction form
    3,612.43/5,418.04 = 1,421.79/x
  3. Step 3: Cross multiply
    3,612.43x = 5,418.04 × 1,421.79
  4. Step 4: Simplify right side
    3,612.43x = 7,703,280.89
  5. Step 5: Solve for x
    x = 7,703,280.89/3,612.43
  6. Step 6: Final answer
    x = 2,132.44

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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.