Home / 1,418.30-1,958.75-1,263.69

Finding the Fourth Proportional to 1,418.30, 1,958.75 and 1,263.69

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Solution

The fourth proportional to 1,418.30, 1,958.75 and 1,263.69 is: 1,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.30 : 1,958.75 = 1,263.69 : x
  2. Step 2: Convert to fraction form
    1,418.30/1,958.75 = 1,263.69/x
  3. Step 3: Cross multiply
    1,418.30x = 1,958.75 × 1,263.69
  4. Step 4: Simplify right side
    1,418.30x = 2,475,252.79
  5. Step 5: Solve for x
    x = 2,475,252.79/1,418.30
  6. Step 6: Final answer
    x = 1,745.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.