Home / 2,742.21-4,113.32-2,191.82

Finding the Fourth Proportional to 2,742.21, 4,113.32 and 2,191.82

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Solution

The fourth proportional to 2,742.21, 4,113.32 and 2,191.82 is: 3,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.21 : 4,113.32 = 2,191.82 : x
  2. Step 2: Convert to fraction form
    2,742.21/4,113.32 = 2,191.82/x
  3. Step 3: Cross multiply
    2,742.21x = 4,113.32 × 2,191.82
  4. Step 4: Simplify right side
    2,742.21x = 9,015,625.52
  5. Step 5: Solve for x
    x = 9,015,625.52/2,742.21
  6. Step 6: Final answer
    x = 3,287.72

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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.