Home / 2,272.21-3,135.49-1,277.64

Finding the Fourth Proportional to 2,272.21, 3,135.49 and 1,277.64

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Solution

The fourth proportional to 2,272.21, 3,135.49 and 1,277.64 is: 1,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.21 : 3,135.49 = 1,277.64 : x
  2. Step 2: Convert to fraction form
    2,272.21/3,135.49 = 1,277.64/x
  3. Step 3: Cross multiply
    2,272.21x = 3,135.49 × 1,277.64
  4. Step 4: Simplify right side
    2,272.21x = 4,006,027.44
  5. Step 5: Solve for x
    x = 4,006,027.44/2,272.21
  6. Step 6: Final answer
    x = 1,763.05

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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.