Home / 1,659.29-2,486.57-1,311.12

Finding the Fourth Proportional to 1,659.29, 2,486.57 and 1,311.12

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Solution

The fourth proportional to 1,659.29, 2,486.57 and 1,311.12 is: 1,964.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.29 : 2,486.57 = 1,311.12 : x
  2. Step 2: Convert to fraction form
    1,659.29/2,486.57 = 1,311.12/x
  3. Step 3: Cross multiply
    1,659.29x = 2,486.57 × 1,311.12
  4. Step 4: Simplify right side
    1,659.29x = 3,260,185.10
  5. Step 5: Solve for x
    x = 3,260,185.10/1,659.29
  6. Step 6: Final answer
    x = 1,964.81

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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.