Home / 3,780.27-5,670.91-1,147.47

Finding the Fourth Proportional to 3,780.27, 5,670.91 and 1,147.47

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Solution

The fourth proportional to 3,780.27, 5,670.91 and 1,147.47 is: 1,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.27 : 5,670.91 = 1,147.47 : x
  2. Step 2: Convert to fraction form
    3,780.27/5,670.91 = 1,147.47/x
  3. Step 3: Cross multiply
    3,780.27x = 5,670.91 × 1,147.47
  4. Step 4: Simplify right side
    3,780.27x = 6,507,179.27
  5. Step 5: Solve for x
    x = 6,507,179.27/3,780.27
  6. Step 6: Final answer
    x = 1,721.35

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1.5x scale

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.