Home / 3,809.29-5,712.71-1,211.62

Finding the Fourth Proportional to 3,809.29, 5,712.71 and 1,211.62

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Solution

The fourth proportional to 3,809.29, 5,712.71 and 1,211.62 is: 1,817.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.29 : 5,712.71 = 1,211.62 : x
  2. Step 2: Convert to fraction form
    3,809.29/5,712.71 = 1,211.62/x
  3. Step 3: Cross multiply
    3,809.29x = 5,712.71 × 1,211.62
  4. Step 4: Simplify right side
    3,809.29x = 6,921,633.69
  5. Step 5: Solve for x
    x = 6,921,633.69/3,809.29
  6. Step 6: Final answer
    x = 1,817.04

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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.