Home / 3,455.22-5,179.32-1,376.70

Finding the Fourth Proportional to 3,455.22, 5,179.32 and 1,376.70

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Solution

The fourth proportional to 3,455.22, 5,179.32 and 1,376.70 is: 2,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.22 : 5,179.32 = 1,376.70 : x
  2. Step 2: Convert to fraction form
    3,455.22/5,179.32 = 1,376.70/x
  3. Step 3: Cross multiply
    3,455.22x = 5,179.32 × 1,376.70
  4. Step 4: Simplify right side
    3,455.22x = 7,130,369.84
  5. Step 5: Solve for x
    x = 7,130,369.84/3,455.22
  6. Step 6: Final answer
    x = 2,063.65

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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.