Home / 1,983.15-2,739.08-1,318.82

Finding the Fourth Proportional to 1,983.15, 2,739.08 and 1,318.82

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Solution

The fourth proportional to 1,983.15, 2,739.08 and 1,318.82 is: 1,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.15 : 2,739.08 = 1,318.82 : x
  2. Step 2: Convert to fraction form
    1,983.15/2,739.08 = 1,318.82/x
  3. Step 3: Cross multiply
    1,983.15x = 2,739.08 × 1,318.82
  4. Step 4: Simplify right side
    1,983.15x = 3,612,343.09
  5. Step 5: Solve for x
    x = 3,612,343.09/1,983.15
  6. Step 6: Final answer
    x = 1,821.52

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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.