Home / 1,909.10-2,634.38-1,112.51

Finding the Fourth Proportional to 1,909.10, 2,634.38 and 1,112.51

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Solution

The fourth proportional to 1,909.10, 2,634.38 and 1,112.51 is: 1,535.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.10 : 2,634.38 = 1,112.51 : x
  2. Step 2: Convert to fraction form
    1,909.10/2,634.38 = 1,112.51/x
  3. Step 3: Cross multiply
    1,909.10x = 2,634.38 × 1,112.51
  4. Step 4: Simplify right side
    1,909.10x = 2,930,768.53
  5. Step 5: Solve for x
    x = 2,930,768.53/1,909.10
  6. Step 6: Final answer
    x = 1,535.16

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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.