Home / 2,669.72-4,005.05-1,285.56

Finding the Fourth Proportional to 2,669.72, 4,005.05 and 1,285.56

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Solution

The fourth proportional to 2,669.72, 4,005.05 and 1,285.56 is: 1,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.72 : 4,005.05 = 1,285.56 : x
  2. Step 2: Convert to fraction form
    2,669.72/4,005.05 = 1,285.56/x
  3. Step 3: Cross multiply
    2,669.72x = 4,005.05 × 1,285.56
  4. Step 4: Simplify right side
    2,669.72x = 5,148,725.65
  5. Step 5: Solve for x
    x = 5,148,725.65/2,669.72
  6. Step 6: Final answer
    x = 1,928.57

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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.