Home / 2,285.30-3,428.11-986.77

Finding the Fourth Proportional to 2,285.30, 3,428.11 and 986.77

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Solution

The fourth proportional to 2,285.30, 3,428.11 and 986.77 is: 1,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.30 : 3,428.11 = 986.77 : x
  2. Step 2: Convert to fraction form
    2,285.30/3,428.11 = 986.77/x
  3. Step 3: Cross multiply
    2,285.30x = 3,428.11 × 986.77
  4. Step 4: Simplify right side
    2,285.30x = 3,382,745.12
  5. Step 5: Solve for x
    x = 3,382,745.12/2,285.30
  6. Step 6: Final answer
    x = 1,480.22

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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.