Home / 3,128.75-4,697.74-1,744.79

Finding the Fourth Proportional to 3,128.75, 4,697.74 and 1,744.79

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Solution

The fourth proportional to 3,128.75, 4,697.74 and 1,744.79 is: 2,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.75 : 4,697.74 = 1,744.79 : x
  2. Step 2: Convert to fraction form
    3,128.75/4,697.74 = 1,744.79/x
  3. Step 3: Cross multiply
    3,128.75x = 4,697.74 × 1,744.79
  4. Step 4: Simplify right side
    3,128.75x = 8,196,569.77
  5. Step 5: Solve for x
    x = 8,196,569.77/3,128.75
  6. Step 6: Final answer
    x = 2,619.76

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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.