Home / 2,711.25-4,070.49-2,128.05

Finding the Fourth Proportional to 2,711.25, 4,070.49 and 2,128.05

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Solution

The fourth proportional to 2,711.25, 4,070.49 and 2,128.05 is: 3,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,711.25 : 4,070.49 = 2,128.05 : x
  2. Step 2: Convert to fraction form
    2,711.25/4,070.49 = 2,128.05/x
  3. Step 3: Cross multiply
    2,711.25x = 4,070.49 × 2,128.05
  4. Step 4: Simplify right side
    2,711.25x = 8,662,206.24
  5. Step 5: Solve for x
    x = 8,662,206.24/2,711.25
  6. Step 6: Final answer
    x = 3,194.91

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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.