Home / 1,679.36-2,517.30-1,215.98

Finding the Fourth Proportional to 1,679.36, 2,517.30 and 1,215.98

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Solution

The fourth proportional to 1,679.36, 2,517.30 and 1,215.98 is: 1,822.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.36 : 2,517.30 = 1,215.98 : x
  2. Step 2: Convert to fraction form
    1,679.36/2,517.30 = 1,215.98/x
  3. Step 3: Cross multiply
    1,679.36x = 2,517.30 × 1,215.98
  4. Step 4: Simplify right side
    1,679.36x = 3,060,986.45
  5. Step 5: Solve for x
    x = 3,060,986.45/1,679.36
  6. Step 6: Final answer
    x = 1,822.71

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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.