Home / 1,813.60-2,720.66-839.96

Finding the Fourth Proportional to 1,813.60, 2,720.66 and 839.96

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Solution

The fourth proportional to 1,813.60, 2,720.66 and 839.96 is: 1,260.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.60 : 2,720.66 = 839.96 : x
  2. Step 2: Convert to fraction form
    1,813.60/2,720.66 = 839.96/x
  3. Step 3: Cross multiply
    1,813.60x = 2,720.66 × 839.96
  4. Step 4: Simplify right side
    1,813.60x = 2,285,245.57
  5. Step 5: Solve for x
    x = 2,285,245.57/1,813.60
  6. Step 6: Final answer
    x = 1,260.06

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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.