Home / 2,272.20-3,405.80-2,087.67

Finding the Fourth Proportional to 2,272.20, 3,405.80 and 2,087.67

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Solution

The fourth proportional to 2,272.20, 3,405.80 and 2,087.67 is: 3,129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.20 : 3,405.80 = 2,087.67 : x
  2. Step 2: Convert to fraction form
    2,272.20/3,405.80 = 2,087.67/x
  3. Step 3: Cross multiply
    2,272.20x = 3,405.80 × 2,087.67
  4. Step 4: Simplify right side
    2,272.20x = 7,110,192.73
  5. Step 5: Solve for x
    x = 7,110,192.73/2,272.20
  6. Step 6: Final answer
    x = 3,129.21

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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.