Home / 1,909.07-2,863.61-814.35

Finding the Fourth Proportional to 1,909.07, 2,863.61 and 814.35

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Solution

The fourth proportional to 1,909.07, 2,863.61 and 814.35 is: 1,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.07 : 2,863.61 = 814.35 : x
  2. Step 2: Convert to fraction form
    1,909.07/2,863.61 = 814.35/x
  3. Step 3: Cross multiply
    1,909.07x = 2,863.61 × 814.35
  4. Step 4: Simplify right side
    1,909.07x = 2,331,976.73
  5. Step 5: Solve for x
    x = 2,331,976.73/1,909.07
  6. Step 6: Final answer
    x = 1,221.53

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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.