Home / 2,730.40-4,091.20-2,179.68

Finding the Fourth Proportional to 2,730.40, 4,091.20 and 2,179.68

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Solution

The fourth proportional to 2,730.40, 4,091.20 and 2,179.68 is: 3,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.40 : 4,091.20 = 2,179.68 : x
  2. Step 2: Convert to fraction form
    2,730.40/4,091.20 = 2,179.68/x
  3. Step 3: Cross multiply
    2,730.40x = 4,091.20 × 2,179.68
  4. Step 4: Simplify right side
    2,730.40x = 8,917,506.82
  5. Step 5: Solve for x
    x = 8,917,506.82/2,730.40
  6. Step 6: Final answer
    x = 3,266.01

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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.