Home / 1,318.30-1,986.50-1,092.26

Finding the Fourth Proportional to 1,318.30, 1,986.50 and 1,092.26

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Solution

The fourth proportional to 1,318.30, 1,986.50 and 1,092.26 is: 1,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.30 : 1,986.50 = 1,092.26 : x
  2. Step 2: Convert to fraction form
    1,318.30/1,986.50 = 1,092.26/x
  3. Step 3: Cross multiply
    1,318.30x = 1,986.50 × 1,092.26
  4. Step 4: Simplify right side
    1,318.30x = 2,169,782.19
  5. Step 5: Solve for x
    x = 2,169,782.19/1,318.30
  6. Step 6: Final answer
    x = 1,645.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.