Home / 4,689.40-7,027.11-1,912.66

Finding the Fourth Proportional to 4,689.40, 7,027.11 and 1,912.66

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Solution

The fourth proportional to 4,689.40, 7,027.11 and 1,912.66 is: 2,866.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.40 : 7,027.11 = 1,912.66 : x
  2. Step 2: Convert to fraction form
    4,689.40/7,027.11 = 1,912.66/x
  3. Step 3: Cross multiply
    4,689.40x = 7,027.11 × 1,912.66
  4. Step 4: Simplify right side
    4,689.40x = 13,440,472.21
  5. Step 5: Solve for x
    x = 13,440,472.21/4,689.40
  6. Step 6: Final answer
    x = 2,866.14

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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.