Home / 3,139.89-4,333.03-1,742.64

Finding the Fourth Proportional to 3,139.89, 4,333.03 and 1,742.64

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Solution

The fourth proportional to 3,139.89, 4,333.03 and 1,742.64 is: 2,404.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.89 : 4,333.03 = 1,742.64 : x
  2. Step 2: Convert to fraction form
    3,139.89/4,333.03 = 1,742.64/x
  3. Step 3: Cross multiply
    3,139.89x = 4,333.03 × 1,742.64
  4. Step 4: Simplify right side
    3,139.89x = 7,550,911.40
  5. Step 5: Solve for x
    x = 7,550,911.40/3,139.89
  6. Step 6: Final answer
    x = 2,404.83

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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.