Home / 3,400.90-5,101.76-1,209.85

Finding the Fourth Proportional to 3,400.90, 5,101.76 and 1,209.85

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Solution

The fourth proportional to 3,400.90, 5,101.76 and 1,209.85 is: 1,814.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.90 : 5,101.76 = 1,209.85 : x
  2. Step 2: Convert to fraction form
    3,400.90/5,101.76 = 1,209.85/x
  3. Step 3: Cross multiply
    3,400.90x = 5,101.76 × 1,209.85
  4. Step 4: Simplify right side
    3,400.90x = 6,172,354.61
  5. Step 5: Solve for x
    x = 6,172,354.61/3,400.90
  6. Step 6: Final answer
    x = 1,814.92

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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.