Home / 3,215.72-4,438.43-1,889.85

Finding the Fourth Proportional to 3,215.72, 4,438.43 and 1,889.85

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Solution

The fourth proportional to 3,215.72, 4,438.43 and 1,889.85 is: 2,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.72 : 4,438.43 = 1,889.85 : x
  2. Step 2: Convert to fraction form
    3,215.72/4,438.43 = 1,889.85/x
  3. Step 3: Cross multiply
    3,215.72x = 4,438.43 × 1,889.85
  4. Step 4: Simplify right side
    3,215.72x = 8,387,966.94
  5. Step 5: Solve for x
    x = 8,387,966.94/3,215.72
  6. Step 6: Final answer
    x = 2,608.43

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1.5x scale

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.