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Finding the Fourth Proportional to 2,183.71, 3,012.87 and 1,973.21

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Solution

The fourth proportional to 2,183.71, 3,012.87 and 1,973.21 is: 2,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,183.71 : 3,012.87 = 1,973.21 : x
  2. Step 2: Convert to fraction form
    2,183.71/3,012.87 = 1,973.21/x
  3. Step 3: Cross multiply
    2,183.71x = 3,012.87 × 1,973.21
  4. Step 4: Simplify right side
    2,183.71x = 5,945,026.32
  5. Step 5: Solve for x
    x = 5,945,026.32/2,183.71
  6. Step 6: Final answer
    x = 2,722.44

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1.5x scale

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.