Home / 3,430.74-5,138.30-2,685.71

Finding the Fourth Proportional to 3,430.74, 5,138.30 and 2,685.71

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Solution

The fourth proportional to 3,430.74, 5,138.30 and 2,685.71 is: 4,022.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.74 : 5,138.30 = 2,685.71 : x
  2. Step 2: Convert to fraction form
    3,430.74/5,138.30 = 2,685.71/x
  3. Step 3: Cross multiply
    3,430.74x = 5,138.30 × 2,685.71
  4. Step 4: Simplify right side
    3,430.74x = 13,799,944.57
  5. Step 5: Solve for x
    x = 13,799,944.57/3,430.74
  6. Step 6: Final answer
    x = 4,022.44

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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.