Home / 1,439.44-2,159.06-385.22

Finding the Fourth Proportional to 1,439.44, 2,159.06 and 385.22

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Solution

The fourth proportional to 1,439.44, 2,159.06 and 385.22 is: 577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.44 : 2,159.06 = 385.22 : x
  2. Step 2: Convert to fraction form
    1,439.44/2,159.06 = 385.22/x
  3. Step 3: Cross multiply
    1,439.44x = 2,159.06 × 385.22
  4. Step 4: Simplify right side
    1,439.44x = 831,716.56
  5. Step 5: Solve for x
    x = 831,716.56/1,439.44
  6. Step 6: Final answer
    x = 577.81

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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.