Home / 2,775-3,826.08-2,276.76

Finding the Fourth Proportional to 2,775, 3,826.08 and 2,276.76

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Solution

The fourth proportional to 2,775, 3,826.08 and 2,276.76 is: 3,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775 : 3,826.08 = 2,276.76 : x
  2. Step 2: Convert to fraction form
    2,775/3,826.08 = 2,276.76/x
  3. Step 3: Cross multiply
    2,775x = 3,826.08 × 2,276.76
  4. Step 4: Simplify right side
    2,775x = 8,711,065.90
  5. Step 5: Solve for x
    x = 8,711,065.90/2,775
  6. Step 6: Final answer
    x = 3,139.12

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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.