Home / 2,311.80-3,467-1,215.57

Finding the Fourth Proportional to 2,311.80, 3,467 and 1,215.57

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Solution

The fourth proportional to 2,311.80, 3,467 and 1,215.57 is: 1,822.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.80 : 3,467 = 1,215.57 : x
  2. Step 2: Convert to fraction form
    2,311.80/3,467 = 1,215.57/x
  3. Step 3: Cross multiply
    2,311.80x = 3,467 × 1,215.57
  4. Step 4: Simplify right side
    2,311.80x = 4,214,381.19
  5. Step 5: Solve for x
    x = 4,214,381.19/2,311.80
  6. Step 6: Final answer
    x = 1,822.99

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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.