Home / 1,909.23-2,863.83-1,259.80

Finding the Fourth Proportional to 1,909.23, 2,863.83 and 1,259.80

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Solution

The fourth proportional to 1,909.23, 2,863.83 and 1,259.80 is: 1,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.23 : 2,863.83 = 1,259.80 : x
  2. Step 2: Convert to fraction form
    1,909.23/2,863.83 = 1,259.80/x
  3. Step 3: Cross multiply
    1,909.23x = 2,863.83 × 1,259.80
  4. Step 4: Simplify right side
    1,909.23x = 3,607,853.03
  5. Step 5: Solve for x
    x = 3,607,853.03/1,909.23
  6. Step 6: Final answer
    x = 1,889.69

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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.