Home / 2,772.20-3,817.86-2,711.72

Finding the Fourth Proportional to 2,772.20, 3,817.86 and 2,711.72

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Solution

The fourth proportional to 2,772.20, 3,817.86 and 2,711.72 is: 3,734.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.20 : 3,817.86 = 2,711.72 : x
  2. Step 2: Convert to fraction form
    2,772.20/3,817.86 = 2,711.72/x
  3. Step 3: Cross multiply
    2,772.20x = 3,817.86 × 2,711.72
  4. Step 4: Simplify right side
    2,772.20x = 10,352,967.32
  5. Step 5: Solve for x
    x = 10,352,967.32/2,772.20
  6. Step 6: Final answer
    x = 3,734.57

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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.