Home / 2,821.88-3,892.32-1,760.12

Finding the Fourth Proportional to 2,821.88, 3,892.32 and 1,760.12

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Solution

The fourth proportional to 2,821.88, 3,892.32 and 1,760.12 is: 2,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.88 : 3,892.32 = 1,760.12 : x
  2. Step 2: Convert to fraction form
    2,821.88/3,892.32 = 1,760.12/x
  3. Step 3: Cross multiply
    2,821.88x = 3,892.32 × 1,760.12
  4. Step 4: Simplify right side
    2,821.88x = 6,850,950.28
  5. Step 5: Solve for x
    x = 6,850,950.28/2,821.88
  6. Step 6: Final answer
    x = 2,427.80

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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.