Home / 5,074.70-7,615.69-3,128.27

Finding the Fourth Proportional to 5,074.70, 7,615.69 and 3,128.27

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Solution

The fourth proportional to 5,074.70, 7,615.69 and 3,128.27 is: 4,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,074.70 : 7,615.69 = 3,128.27 : x
  2. Step 2: Convert to fraction form
    5,074.70/7,615.69 = 3,128.27/x
  3. Step 3: Cross multiply
    5,074.70x = 7,615.69 × 3,128.27
  4. Step 4: Simplify right side
    5,074.70x = 23,823,888.66
  5. Step 5: Solve for x
    x = 23,823,888.66/5,074.70
  6. Step 6: Final answer
    x = 4,694.64

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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.