Home / 1,834.40-2,531.79-1,391.55

Finding the Fourth Proportional to 1,834.40, 2,531.79 and 1,391.55

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Solution

The fourth proportional to 1,834.40, 2,531.79 and 1,391.55 is: 1,920.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,834.40 : 2,531.79 = 1,391.55 : x
  2. Step 2: Convert to fraction form
    1,834.40/2,531.79 = 1,391.55/x
  3. Step 3: Cross multiply
    1,834.40x = 2,531.79 × 1,391.55
  4. Step 4: Simplify right side
    1,834.40x = 3,523,112.37
  5. Step 5: Solve for x
    x = 3,523,112.37/1,834.40
  6. Step 6: Final answer
    x = 1,920.59

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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.