Home / 2,285.32-3,428.70-986.80

Finding the Fourth Proportional to 2,285.32, 3,428.70 and 986.80

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Solution

The fourth proportional to 2,285.32, 3,428.70 and 986.80 is: 1,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.32 : 3,428.70 = 986.80 : x
  2. Step 2: Convert to fraction form
    2,285.32/3,428.70 = 986.80/x
  3. Step 3: Cross multiply
    2,285.32x = 3,428.70 × 986.80
  4. Step 4: Simplify right side
    2,285.32x = 3,383,441.16
  5. Step 5: Solve for x
    x = 3,383,441.16/2,285.32
  6. Step 6: Final answer
    x = 1,480.51

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1.5x scale

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.