Home / 1,418.33-2,127.48-378.32

Finding the Fourth Proportional to 1,418.33, 2,127.48 and 378.32

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Solution

The fourth proportional to 1,418.33, 2,127.48 and 378.32 is: 567.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.33 : 2,127.48 = 378.32 : x
  2. Step 2: Convert to fraction form
    1,418.33/2,127.48 = 378.32/x
  3. Step 3: Cross multiply
    1,418.33x = 2,127.48 × 378.32
  4. Step 4: Simplify right side
    1,418.33x = 804,857.60
  5. Step 5: Solve for x
    x = 804,857.60/1,418.33
  6. Step 6: Final answer
    x = 567.47

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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.