Home / 3,455.24-5,178.51-2,721.92

Finding the Fourth Proportional to 3,455.24, 5,178.51 and 2,721.92

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Solution

The fourth proportional to 3,455.24, 5,178.51 and 2,721.92 is: 4,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.24 : 5,178.51 = 2,721.92 : x
  2. Step 2: Convert to fraction form
    3,455.24/5,178.51 = 2,721.92/x
  3. Step 3: Cross multiply
    3,455.24x = 5,178.51 × 2,721.92
  4. Step 4: Simplify right side
    3,455.24x = 14,095,464.05
  5. Step 5: Solve for x
    x = 14,095,464.05/3,455.24
  6. Step 6: Final answer
    x = 4,079.45

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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.