Home / 1,821.70-2,728.44-1,276.32

Finding the Fourth Proportional to 1,821.70, 2,728.44 and 1,276.32

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Solution

The fourth proportional to 1,821.70, 2,728.44 and 1,276.32 is: 1,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.70 : 2,728.44 = 1,276.32 : x
  2. Step 2: Convert to fraction form
    1,821.70/2,728.44 = 1,276.32/x
  3. Step 3: Cross multiply
    1,821.70x = 2,728.44 × 1,276.32
  4. Step 4: Simplify right side
    1,821.70x = 3,482,350.71
  5. Step 5: Solve for x
    x = 3,482,350.71/1,821.70
  6. Step 6: Final answer
    x = 1,911.59

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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.