Home / 2,179.62-3,267.20-1,139.08

Finding the Fourth Proportional to 2,179.62, 3,267.20 and 1,139.08

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Solution

The fourth proportional to 2,179.62, 3,267.20 and 1,139.08 is: 1,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.62 : 3,267.20 = 1,139.08 : x
  2. Step 2: Convert to fraction form
    2,179.62/3,267.20 = 1,139.08/x
  3. Step 3: Cross multiply
    2,179.62x = 3,267.20 × 1,139.08
  4. Step 4: Simplify right side
    2,179.62x = 3,721,596.86
  5. Step 5: Solve for x
    x = 3,721,596.86/2,179.62
  6. Step 6: Final answer
    x = 1,707.45

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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.