Home / 2,191.11-3,287.21-730.19

Finding the Fourth Proportional to 2,191.11, 3,287.21 and 730.19

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Solution

The fourth proportional to 2,191.11, 3,287.21 and 730.19 is: 1,095.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.11 : 3,287.21 = 730.19 : x
  2. Step 2: Convert to fraction form
    2,191.11/3,287.21 = 730.19/x
  3. Step 3: Cross multiply
    2,191.11x = 3,287.21 × 730.19
  4. Step 4: Simplify right side
    2,191.11x = 2,400,267.78
  5. Step 5: Solve for x
    x = 2,400,267.78/2,191.11
  6. Step 6: Final answer
    x = 1,095.46

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Double scale
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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.