Home / 2,821.73-3,894.84-1,827

Finding the Fourth Proportional to 2,821.73, 3,894.84 and 1,827

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Solution

The fourth proportional to 2,821.73, 3,894.84 and 1,827 is: 2,521.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.73 : 3,894.84 = 1,827 : x
  2. Step 2: Convert to fraction form
    2,821.73/3,894.84 = 1,827/x
  3. Step 3: Cross multiply
    2,821.73x = 3,894.84 × 1,827
  4. Step 4: Simplify right side
    2,821.73x = 7,115,872.68
  5. Step 5: Solve for x
    x = 7,115,872.68/2,821.73
  6. Step 6: Final answer
    x = 2,521.82

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1.5x scale

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.