Home / 1,976.40-2,727.18-1,137.24

Finding the Fourth Proportional to 1,976.40, 2,727.18 and 1,137.24

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Solution

The fourth proportional to 1,976.40, 2,727.18 and 1,137.24 is: 1,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.40 : 2,727.18 = 1,137.24 : x
  2. Step 2: Convert to fraction form
    1,976.40/2,727.18 = 1,137.24/x
  3. Step 3: Cross multiply
    1,976.40x = 2,727.18 × 1,137.24
  4. Step 4: Simplify right side
    1,976.40x = 3,101,458.18
  5. Step 5: Solve for x
    x = 3,101,458.18/1,976.40
  6. Step 6: Final answer
    x = 1,569.25

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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.