Home / 2,939.57-4,056.49-1,680.56

Finding the Fourth Proportional to 2,939.57, 4,056.49 and 1,680.56

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Solution

The fourth proportional to 2,939.57, 4,056.49 and 1,680.56 is: 2,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.57 : 4,056.49 = 1,680.56 : x
  2. Step 2: Convert to fraction form
    2,939.57/4,056.49 = 1,680.56/x
  3. Step 3: Cross multiply
    2,939.57x = 4,056.49 × 1,680.56
  4. Step 4: Simplify right side
    2,939.57x = 6,817,174.83
  5. Step 5: Solve for x
    x = 6,817,174.83/2,939.57
  6. Step 6: Final answer
    x = 2,319.11

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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.