Home / 2,351.11-3,528.29-812.11

Finding the Fourth Proportional to 2,351.11, 3,528.29 and 812.11

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Solution

The fourth proportional to 2,351.11, 3,528.29 and 812.11 is: 1,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.11 : 3,528.29 = 812.11 : x
  2. Step 2: Convert to fraction form
    2,351.11/3,528.29 = 812.11/x
  3. Step 3: Cross multiply
    2,351.11x = 3,528.29 × 812.11
  4. Step 4: Simplify right side
    2,351.11x = 2,865,354.85
  5. Step 5: Solve for x
    x = 2,865,354.85/2,351.11
  6. Step 6: Final answer
    x = 1,218.72

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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.