Home / 3,782.88-5,220.45-2,211.48

Finding the Fourth Proportional to 3,782.88, 5,220.45 and 2,211.48

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Solution

The fourth proportional to 3,782.88, 5,220.45 and 2,211.48 is: 3,051.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.88 : 5,220.45 = 2,211.48 : x
  2. Step 2: Convert to fraction form
    3,782.88/5,220.45 = 2,211.48/x
  3. Step 3: Cross multiply
    3,782.88x = 5,220.45 × 2,211.48
  4. Step 4: Simplify right side
    3,782.88x = 11,544,920.77
  5. Step 5: Solve for x
    x = 11,544,920.77/3,782.88
  6. Step 6: Final answer
    x = 3,051.89

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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.