Home / 3,780.26-5,670.40-1,147.79

Finding the Fourth Proportional to 3,780.26, 5,670.40 and 1,147.79

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Solution

The fourth proportional to 3,780.26, 5,670.40 and 1,147.79 is: 1,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.26 : 5,670.40 = 1,147.79 : x
  2. Step 2: Convert to fraction form
    3,780.26/5,670.40 = 1,147.79/x
  3. Step 3: Cross multiply
    3,780.26x = 5,670.40 × 1,147.79
  4. Step 4: Simplify right side
    3,780.26x = 6,508,428.42
  5. Step 5: Solve for x
    x = 6,508,428.42/3,780.26
  6. Step 6: Final answer
    x = 1,721.69

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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.