Home / 3,455.11-5,178.34-2,721.79

Finding the Fourth Proportional to 3,455.11, 5,178.34 and 2,721.79

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Solution

The fourth proportional to 3,455.11, 5,178.34 and 2,721.79 is: 4,079.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.11 : 5,178.34 = 2,721.79 : x
  2. Step 2: Convert to fraction form
    3,455.11/5,178.34 = 2,721.79/x
  3. Step 3: Cross multiply
    3,455.11x = 5,178.34 × 2,721.79
  4. Step 4: Simplify right side
    3,455.11x = 14,094,354.03
  5. Step 5: Solve for x
    x = 14,094,354.03/3,455.11
  6. Step 6: Final answer
    x = 4,079.28

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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.