Home / 1,323.30-1,982.84-1,116.90

Finding the Fourth Proportional to 1,323.30, 1,982.84 and 1,116.90

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Solution

The fourth proportional to 1,323.30, 1,982.84 and 1,116.90 is: 1,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.30 : 1,982.84 = 1,116.90 : x
  2. Step 2: Convert to fraction form
    1,323.30/1,982.84 = 1,116.90/x
  3. Step 3: Cross multiply
    1,323.30x = 1,982.84 × 1,116.90
  4. Step 4: Simplify right side
    1,323.30x = 2,214,634.00
  5. Step 5: Solve for x
    x = 2,214,634.00/1,323.30
  6. Step 6: Final answer
    x = 1,673.57

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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.