Home / 1,427.32-2,141.31-440.11

Finding the Fourth Proportional to 1,427.32, 2,141.31 and 440.11

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Solution

The fourth proportional to 1,427.32, 2,141.31 and 440.11 is: 660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.32 : 2,141.31 = 440.11 : x
  2. Step 2: Convert to fraction form
    1,427.32/2,141.31 = 440.11/x
  3. Step 3: Cross multiply
    1,427.32x = 2,141.31 × 440.11
  4. Step 4: Simplify right side
    1,427.32x = 942,411.94
  5. Step 5: Solve for x
    x = 942,411.94/1,427.32
  6. Step 6: Final answer
    x = 660.27

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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.