Home / 2,179.22-3,006.87-1,294.70

Finding the Fourth Proportional to 2,179.22, 3,006.87 and 1,294.70

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Solution

The fourth proportional to 2,179.22, 3,006.87 and 1,294.70 is: 1,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.22 : 3,006.87 = 1,294.70 : x
  2. Step 2: Convert to fraction form
    2,179.22/3,006.87 = 1,294.70/x
  3. Step 3: Cross multiply
    2,179.22x = 3,006.87 × 1,294.70
  4. Step 4: Simplify right side
    2,179.22x = 3,892,994.59
  5. Step 5: Solve for x
    x = 3,892,994.59/2,179.22
  6. Step 6: Final answer
    x = 1,786.42

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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.