Home / 2,179.89-3,008.39-1,329.46

Finding the Fourth Proportional to 2,179.89, 3,008.39 and 1,329.46

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Solution

The fourth proportional to 2,179.89, 3,008.39 and 1,329.46 is: 1,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.89 : 3,008.39 = 1,329.46 : x
  2. Step 2: Convert to fraction form
    2,179.89/3,008.39 = 1,329.46/x
  3. Step 3: Cross multiply
    2,179.89x = 3,008.39 × 1,329.46
  4. Step 4: Simplify right side
    2,179.89x = 3,999,519.13
  5. Step 5: Solve for x
    x = 3,999,519.13/2,179.89
  6. Step 6: Final answer
    x = 1,834.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.