Home / 1,418.95-2,125.97-1,107.21

Finding the Fourth Proportional to 1,418.95, 2,125.97 and 1,107.21

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Solution

The fourth proportional to 1,418.95, 2,125.97 and 1,107.21 is: 1,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.95 : 2,125.97 = 1,107.21 : x
  2. Step 2: Convert to fraction form
    1,418.95/2,125.97 = 1,107.21/x
  3. Step 3: Cross multiply
    1,418.95x = 2,125.97 × 1,107.21
  4. Step 4: Simplify right side
    1,418.95x = 2,353,895.24
  5. Step 5: Solve for x
    x = 2,353,895.24/1,418.95
  6. Step 6: Final answer
    x = 1,658.91

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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.