Home / 2,939.70-4,056.90-1,663.68

Finding the Fourth Proportional to 2,939.70, 4,056.90 and 1,663.68

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Solution

The fourth proportional to 2,939.70, 4,056.90 and 1,663.68 is: 2,295.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.70 : 4,056.90 = 1,663.68 : x
  2. Step 2: Convert to fraction form
    2,939.70/4,056.90 = 1,663.68/x
  3. Step 3: Cross multiply
    2,939.70x = 4,056.90 × 1,663.68
  4. Step 4: Simplify right side
    2,939.70x = 6,749,383.39
  5. Step 5: Solve for x
    x = 6,749,383.39/2,939.70
  6. Step 6: Final answer
    x = 2,295.94

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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.