Home / 2,912.15-4,018.79-1,585.86

Finding the Fourth Proportional to 2,912.15, 4,018.79 and 1,585.86

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Solution

The fourth proportional to 2,912.15, 4,018.79 and 1,585.86 is: 2,188.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.15 : 4,018.79 = 1,585.86 : x
  2. Step 2: Convert to fraction form
    2,912.15/4,018.79 = 1,585.86/x
  3. Step 3: Cross multiply
    2,912.15x = 4,018.79 × 1,585.86
  4. Step 4: Simplify right side
    2,912.15x = 6,373,238.31
  5. Step 5: Solve for x
    x = 6,373,238.31/2,912.15
  6. Step 6: Final answer
    x = 2,188.50

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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.