Home / 3,139.89-4,333.13-1,723.74

Finding the Fourth Proportional to 3,139.89, 4,333.13 and 1,723.74

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Solution

The fourth proportional to 3,139.89, 4,333.13 and 1,723.74 is: 2,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.89 : 4,333.13 = 1,723.74 : x
  2. Step 2: Convert to fraction form
    3,139.89/4,333.13 = 1,723.74/x
  3. Step 3: Cross multiply
    3,139.89x = 4,333.13 × 1,723.74
  4. Step 4: Simplify right side
    3,139.89x = 7,469,189.51
  5. Step 5: Solve for x
    x = 7,469,189.51/3,139.89
  6. Step 6: Final answer
    x = 2,378.81

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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.