Home / 1,318.20-1,976.55-1,164.43

Finding the Fourth Proportional to 1,318.20, 1,976.55 and 1,164.43

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Solution

The fourth proportional to 1,318.20, 1,976.55 and 1,164.43 is: 1,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.20 : 1,976.55 = 1,164.43 : x
  2. Step 2: Convert to fraction form
    1,318.20/1,976.55 = 1,164.43/x
  3. Step 3: Cross multiply
    1,318.20x = 1,976.55 × 1,164.43
  4. Step 4: Simplify right side
    1,318.20x = 2,301,554.12
  5. Step 5: Solve for x
    x = 2,301,554.12/1,318.20
  6. Step 6: Final answer
    x = 1,745.98

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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.