Home / 1,317.18-1,976.34-1,074.18

Finding the Fourth Proportional to 1,317.18, 1,976.34 and 1,074.18

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Solution

The fourth proportional to 1,317.18, 1,976.34 and 1,074.18 is: 1,611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.18 : 1,976.34 = 1,074.18 : x
  2. Step 2: Convert to fraction form
    1,317.18/1,976.34 = 1,074.18/x
  3. Step 3: Cross multiply
    1,317.18x = 1,976.34 × 1,074.18
  4. Step 4: Simplify right side
    1,317.18x = 2,122,944.90
  5. Step 5: Solve for x
    x = 2,122,944.90/1,317.18
  6. Step 6: Final answer
    x = 1,611.73

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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.