Home / 2,179.10-3,006.99-1,339.79

Finding the Fourth Proportional to 2,179.10, 3,006.99 and 1,339.79

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Solution

The fourth proportional to 2,179.10, 3,006.99 and 1,339.79 is: 1,848.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.10 : 3,006.99 = 1,339.79 : x
  2. Step 2: Convert to fraction form
    2,179.10/3,006.99 = 1,339.79/x
  3. Step 3: Cross multiply
    2,179.10x = 3,006.99 × 1,339.79
  4. Step 4: Simplify right side
    2,179.10x = 4,028,735.13
  5. Step 5: Solve for x
    x = 4,028,735.13/2,179.10
  6. Step 6: Final answer
    x = 1,848.81

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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.