Home / 2,912.08-4,018.46-1,585.78

Finding the Fourth Proportional to 2,912.08, 4,018.46 and 1,585.78

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Solution

The fourth proportional to 2,912.08, 4,018.46 and 1,585.78 is: 2,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.08 : 4,018.46 = 1,585.78 : x
  2. Step 2: Convert to fraction form
    2,912.08/4,018.46 = 1,585.78/x
  3. Step 3: Cross multiply
    2,912.08x = 4,018.46 × 1,585.78
  4. Step 4: Simplify right side
    2,912.08x = 6,372,393.50
  5. Step 5: Solve for x
    x = 6,372,393.50/2,912.08
  6. Step 6: Final answer
    x = 2,188.26

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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.