Home / 1,418.12-2,126.60-540.94

Finding the Fourth Proportional to 1,418.12, 2,126.60 and 540.94

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Solution

The fourth proportional to 1,418.12, 2,126.60 and 540.94 is: 811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.12 : 2,126.60 = 540.94 : x
  2. Step 2: Convert to fraction form
    1,418.12/2,126.60 = 540.94/x
  3. Step 3: Cross multiply
    1,418.12x = 2,126.60 × 540.94
  4. Step 4: Simplify right side
    1,418.12x = 1,150,364.31
  5. Step 5: Solve for x
    x = 1,150,364.31/1,418.12
  6. Step 6: Final answer
    x = 811.19

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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.