Home / 3,780.64-5,668.74-1,147.35

Finding the Fourth Proportional to 3,780.64, 5,668.74 and 1,147.35

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Solution

The fourth proportional to 3,780.64, 5,668.74 and 1,147.35 is: 1,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.64 : 5,668.74 = 1,147.35 : x
  2. Step 2: Convert to fraction form
    3,780.64/5,668.74 = 1,147.35/x
  3. Step 3: Cross multiply
    3,780.64x = 5,668.74 × 1,147.35
  4. Step 4: Simplify right side
    3,780.64x = 6,504,028.84
  5. Step 5: Solve for x
    x = 6,504,028.84/3,780.64
  6. Step 6: Final answer
    x = 1,720.35

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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.