Home / 1,909.11-2,634.74-1,069.80

Finding the Fourth Proportional to 1,909.11, 2,634.74 and 1,069.80

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Solution

The fourth proportional to 1,909.11, 2,634.74 and 1,069.80 is: 1,476.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.11 : 2,634.74 = 1,069.80 : x
  2. Step 2: Convert to fraction form
    1,909.11/2,634.74 = 1,069.80/x
  3. Step 3: Cross multiply
    1,909.11x = 2,634.74 × 1,069.80
  4. Step 4: Simplify right side
    1,909.11x = 2,818,653.40
  5. Step 5: Solve for x
    x = 2,818,653.40/1,909.11
  6. Step 6: Final answer
    x = 1,476.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.