Home / 1,939.60-2,910.16-1,117.43

Finding the Fourth Proportional to 1,939.60, 2,910.16 and 1,117.43

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Solution

The fourth proportional to 1,939.60, 2,910.16 and 1,117.43 is: 1,676.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.60 : 2,910.16 = 1,117.43 : x
  2. Step 2: Convert to fraction form
    1,939.60/2,910.16 = 1,117.43/x
  3. Step 3: Cross multiply
    1,939.60x = 2,910.16 × 1,117.43
  4. Step 4: Simplify right side
    1,939.60x = 3,251,900.09
  5. Step 5: Solve for x
    x = 3,251,900.09/1,939.60
  6. Step 6: Final answer
    x = 1,676.58

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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.