Home / 1,909.31-2,858.49-1,414.80

Finding the Fourth Proportional to 1,909.31, 2,858.49 and 1,414.80

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Solution

The fourth proportional to 1,909.31, 2,858.49 and 1,414.80 is: 2,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.31 : 2,858.49 = 1,414.80 : x
  2. Step 2: Convert to fraction form
    1,909.31/2,858.49 = 1,414.80/x
  3. Step 3: Cross multiply
    1,909.31x = 2,858.49 × 1,414.80
  4. Step 4: Simplify right side
    1,909.31x = 4,044,191.65
  5. Step 5: Solve for x
    x = 4,044,191.65/1,909.31
  6. Step 6: Final answer
    x = 2,118.15

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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.