Home / 2,180.21-3,009-1,619.88

Finding the Fourth Proportional to 2,180.21, 3,009 and 1,619.88

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Solution

The fourth proportional to 2,180.21, 3,009 and 1,619.88 is: 2,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.21 : 3,009 = 1,619.88 : x
  2. Step 2: Convert to fraction form
    2,180.21/3,009 = 1,619.88/x
  3. Step 3: Cross multiply
    2,180.21x = 3,009 × 1,619.88
  4. Step 4: Simplify right side
    2,180.21x = 4,874,218.92
  5. Step 5: Solve for x
    x = 4,874,218.92/2,180.21
  6. Step 6: Final answer
    x = 2,235.67

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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.