Home / 2,640.08-3,957.21-1,406.25

Finding the Fourth Proportional to 2,640.08, 3,957.21 and 1,406.25

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Solution

The fourth proportional to 2,640.08, 3,957.21 and 1,406.25 is: 2,107.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.08 : 3,957.21 = 1,406.25 : x
  2. Step 2: Convert to fraction form
    2,640.08/3,957.21 = 1,406.25/x
  3. Step 3: Cross multiply
    2,640.08x = 3,957.21 × 1,406.25
  4. Step 4: Simplify right side
    2,640.08x = 5,564,826.56
  5. Step 5: Solve for x
    x = 5,564,826.56/2,640.08
  6. Step 6: Final answer
    x = 2,107.83

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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.