Home / 3,815.99-5,263.92-2,222.45

Finding the Fourth Proportional to 3,815.99, 5,263.92 and 2,222.45

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Solution

The fourth proportional to 3,815.99, 5,263.92 and 2,222.45 is: 3,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.99 : 5,263.92 = 2,222.45 : x
  2. Step 2: Convert to fraction form
    3,815.99/5,263.92 = 2,222.45/x
  3. Step 3: Cross multiply
    3,815.99x = 5,263.92 × 2,222.45
  4. Step 4: Simplify right side
    3,815.99x = 11,698,812.16
  5. Step 5: Solve for x
    x = 11,698,812.16/3,815.99
  6. Step 6: Final answer
    x = 3,065.73

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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.