Home / 2,179.04-3,265.20-1,299.80

Finding the Fourth Proportional to 2,179.04, 3,265.20 and 1,299.80

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Solution

The fourth proportional to 2,179.04, 3,265.20 and 1,299.80 is: 1,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.04 : 3,265.20 = 1,299.80 : x
  2. Step 2: Convert to fraction form
    2,179.04/3,265.20 = 1,299.80/x
  3. Step 3: Cross multiply
    2,179.04x = 3,265.20 × 1,299.80
  4. Step 4: Simplify right side
    2,179.04x = 4,244,106.96
  5. Step 5: Solve for x
    x = 4,244,106.96/2,179.04
  6. Step 6: Final answer
    x = 1,947.70

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1.5x scale

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.