Home / 1,418.16-2,126.94-677.35

Finding the Fourth Proportional to 1,418.16, 2,126.94 and 677.35

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Solution

The fourth proportional to 1,418.16, 2,126.94 and 677.35 is: 1,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.16 : 2,126.94 = 677.35 : x
  2. Step 2: Convert to fraction form
    1,418.16/2,126.94 = 677.35/x
  3. Step 3: Cross multiply
    1,418.16x = 2,126.94 × 677.35
  4. Step 4: Simplify right side
    1,418.16x = 1,440,682.81
  5. Step 5: Solve for x
    x = 1,440,682.81/1,418.16
  6. Step 6: Final answer
    x = 1,015.88

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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.