Home / 1,951.49-2,920.25-1,821.15

Finding the Fourth Proportional to 1,951.49, 2,920.25 and 1,821.15

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Solution

The fourth proportional to 1,951.49, 2,920.25 and 1,821.15 is: 2,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.49 : 2,920.25 = 1,821.15 : x
  2. Step 2: Convert to fraction form
    1,951.49/2,920.25 = 1,821.15/x
  3. Step 3: Cross multiply
    1,951.49x = 2,920.25 × 1,821.15
  4. Step 4: Simplify right side
    1,951.49x = 5,318,217.84
  5. Step 5: Solve for x
    x = 5,318,217.84/1,951.49
  6. Step 6: Final answer
    x = 2,725.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.