Home / 1,909.19-2,633.91-1,162.55

Finding the Fourth Proportional to 1,909.19, 2,633.91 and 1,162.55

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Solution

The fourth proportional to 1,909.19, 2,633.91 and 1,162.55 is: 1,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.19 : 2,633.91 = 1,162.55 : x
  2. Step 2: Convert to fraction form
    1,909.19/2,633.91 = 1,162.55/x
  3. Step 3: Cross multiply
    1,909.19x = 2,633.91 × 1,162.55
  4. Step 4: Simplify right side
    1,909.19x = 3,062,052.07
  5. Step 5: Solve for x
    x = 3,062,052.07/1,909.19
  6. Step 6: Final answer
    x = 1,603.85

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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.