Home / 1,909.08-2,634.60-1,123.56

Finding the Fourth Proportional to 1,909.08, 2,634.60 and 1,123.56

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Solution

The fourth proportional to 1,909.08, 2,634.60 and 1,123.56 is: 1,550.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.08 : 2,634.60 = 1,123.56 : x
  2. Step 2: Convert to fraction form
    1,909.08/2,634.60 = 1,123.56/x
  3. Step 3: Cross multiply
    1,909.08x = 2,634.60 × 1,123.56
  4. Step 4: Simplify right side
    1,909.08x = 2,960,131.18
  5. Step 5: Solve for x
    x = 2,960,131.18/1,909.08
  6. Step 6: Final answer
    x = 1,550.55

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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.