Home / 3,421.84-5,129.61-1,665.85

Finding the Fourth Proportional to 3,421.84, 5,129.61 and 1,665.85

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Solution

The fourth proportional to 3,421.84, 5,129.61 and 1,665.85 is: 2,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.84 : 5,129.61 = 1,665.85 : x
  2. Step 2: Convert to fraction form
    3,421.84/5,129.61 = 1,665.85/x
  3. Step 3: Cross multiply
    3,421.84x = 5,129.61 × 1,665.85
  4. Step 4: Simplify right side
    3,421.84x = 8,545,160.82
  5. Step 5: Solve for x
    x = 8,545,160.82/3,421.84
  6. Step 6: Final answer
    x = 2,497.24

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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.