Home / 3,138.35-4,330.86-1,722.06

Finding the Fourth Proportional to 3,138.35, 4,330.86 and 1,722.06

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Solution

The fourth proportional to 3,138.35, 4,330.86 and 1,722.06 is: 2,376.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.35 : 4,330.86 = 1,722.06 : x
  2. Step 2: Convert to fraction form
    3,138.35/4,330.86 = 1,722.06/x
  3. Step 3: Cross multiply
    3,138.35x = 4,330.86 × 1,722.06
  4. Step 4: Simplify right side
    3,138.35x = 7,458,000.77
  5. Step 5: Solve for x
    x = 7,458,000.77/3,138.35
  6. Step 6: Final answer
    x = 2,376.41

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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.