Home / 3,782.30-5,220.25-2,291.49

Finding the Fourth Proportional to 3,782.30, 5,220.25 and 2,291.49

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Solution

The fourth proportional to 3,782.30, 5,220.25 and 2,291.49 is: 3,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.30 : 5,220.25 = 2,291.49 : x
  2. Step 2: Convert to fraction form
    3,782.30/5,220.25 = 2,291.49/x
  3. Step 3: Cross multiply
    3,782.30x = 5,220.25 × 2,291.49
  4. Step 4: Simplify right side
    3,782.30x = 11,962,144.94
  5. Step 5: Solve for x
    x = 11,962,144.94/3,782.30
  6. Step 6: Final answer
    x = 3,162.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.