Home / 1,418.11-2,127.26-378.10

Finding the Fourth Proportional to 1,418.11, 2,127.26 and 378.10

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Solution

The fourth proportional to 1,418.11, 2,127.26 and 378.10 is: 567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.11 : 2,127.26 = 378.10 : x
  2. Step 2: Convert to fraction form
    1,418.11/2,127.26 = 378.10/x
  3. Step 3: Cross multiply
    1,418.11x = 2,127.26 × 378.10
  4. Step 4: Simplify right side
    1,418.11x = 804,316.06
  5. Step 5: Solve for x
    x = 804,316.06/1,418.11
  6. Step 6: Final answer
    x = 567.18

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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.