Home / 3,824-5,277.76-2,890.88

Finding the Fourth Proportional to 3,824, 5,277.76 and 2,890.88

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Solution

The fourth proportional to 3,824, 5,277.76 and 2,890.88 is: 3,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824 : 5,277.76 = 2,890.88 : x
  2. Step 2: Convert to fraction form
    3,824/5,277.76 = 2,890.88/x
  3. Step 3: Cross multiply
    3,824x = 5,277.76 × 2,890.88
  4. Step 4: Simplify right side
    3,824x = 15,257,370.83
  5. Step 5: Solve for x
    x = 15,257,370.83/3,824
  6. Step 6: Final answer
    x = 3,989.90

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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.