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Finding the Fourth Proportional to 2,169.83, 3,254.92 and 709.13

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Solution

The fourth proportional to 2,169.83, 3,254.92 and 709.13 is: 1,063.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.83 : 3,254.92 = 709.13 : x
  2. Step 2: Convert to fraction form
    2,169.83/3,254.92 = 709.13/x
  3. Step 3: Cross multiply
    2,169.83x = 3,254.92 × 709.13
  4. Step 4: Simplify right side
    2,169.83x = 2,308,167.78
  5. Step 5: Solve for x
    x = 2,308,167.78/2,169.83
  6. Step 6: Final answer
    x = 1,063.75

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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.