Home / 2,912.11-4,018.87-1,585.79

Finding the Fourth Proportional to 2,912.11, 4,018.87 and 1,585.79

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Solution

The fourth proportional to 2,912.11, 4,018.87 and 1,585.79 is: 2,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.11 : 4,018.87 = 1,585.79 : x
  2. Step 2: Convert to fraction form
    2,912.11/4,018.87 = 1,585.79/x
  3. Step 3: Cross multiply
    2,912.11x = 4,018.87 × 1,585.79
  4. Step 4: Simplify right side
    2,912.11x = 6,373,063.76
  5. Step 5: Solve for x
    x = 6,373,063.76/2,912.11
  6. Step 6: Final answer
    x = 2,188.47

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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.