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Finding the Fourth Proportional to 1,489.44, 2,226 and 1,372.68

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Solution

The fourth proportional to 1,489.44, 2,226 and 1,372.68 is: 2,051.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.44 : 2,226 = 1,372.68 : x
  2. Step 2: Convert to fraction form
    1,489.44/2,226 = 1,372.68/x
  3. Step 3: Cross multiply
    1,489.44x = 2,226 × 1,372.68
  4. Step 4: Simplify right side
    1,489.44x = 3,055,585.68
  5. Step 5: Solve for x
    x = 3,055,585.68/1,489.44
  6. Step 6: Final answer
    x = 2,051.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.