Home / 2,191.06-3,287.96-1,217.84

Finding the Fourth Proportional to 2,191.06, 3,287.96 and 1,217.84

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Solution

The fourth proportional to 2,191.06, 3,287.96 and 1,217.84 is: 1,827.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.06 : 3,287.96 = 1,217.84 : x
  2. Step 2: Convert to fraction form
    2,191.06/3,287.96 = 1,217.84/x
  3. Step 3: Cross multiply
    2,191.06x = 3,287.96 × 1,217.84
  4. Step 4: Simplify right side
    2,191.06x = 4,004,209.21
  5. Step 5: Solve for x
    x = 4,004,209.21/2,191.06
  6. Step 6: Final answer
    x = 1,827.52

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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.