Home / 2,311.13-3,189.94-1,317.00

Finding the Fourth Proportional to 2,311.13, 3,189.94 and 1,317.00

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Solution

The fourth proportional to 2,311.13, 3,189.94 and 1,317.00 is: 1,817.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.13 : 3,189.94 = 1,317.00 : x
  2. Step 2: Convert to fraction form
    2,311.13/3,189.94 = 1,317.00/x
  3. Step 3: Cross multiply
    2,311.13x = 3,189.94 × 1,317.00
  4. Step 4: Simplify right side
    2,311.13x = 4,201,151.67
  5. Step 5: Solve for x
    x = 4,201,151.67/2,311.13
  6. Step 6: Final answer
    x = 1,817.79

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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.