Home / 2,898.18-3,999.43-1,639.09

Finding the Fourth Proportional to 2,898.18, 3,999.43 and 1,639.09

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Solution

The fourth proportional to 2,898.18, 3,999.43 and 1,639.09 is: 2,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.18 : 3,999.43 = 1,639.09 : x
  2. Step 2: Convert to fraction form
    2,898.18/3,999.43 = 1,639.09/x
  3. Step 3: Cross multiply
    2,898.18x = 3,999.43 × 1,639.09
  4. Step 4: Simplify right side
    2,898.18x = 6,555,401.05
  5. Step 5: Solve for x
    x = 6,555,401.05/2,898.18
  6. Step 6: Final answer
    x = 2,261.90

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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.