Home / 2,939.16-4,409.82-2,118.36

Finding the Fourth Proportional to 2,939.16, 4,409.82 and 2,118.36

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Solution

The fourth proportional to 2,939.16, 4,409.82 and 2,118.36 is: 3,178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.16 : 4,409.82 = 2,118.36 : x
  2. Step 2: Convert to fraction form
    2,939.16/4,409.82 = 2,118.36/x
  3. Step 3: Cross multiply
    2,939.16x = 4,409.82 × 2,118.36
  4. Step 4: Simplify right side
    2,939.16x = 9,341,586.30
  5. Step 5: Solve for x
    x = 9,341,586.30/2,939.16
  6. Step 6: Final answer
    x = 3,178.32

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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.