Home / 1,639.92-2,272.44-1,619.88

Finding the Fourth Proportional to 1,639.92, 2,272.44 and 1,619.88

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Solution

The fourth proportional to 1,639.92, 2,272.44 and 1,619.88 is: 2,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.92 : 2,272.44 = 1,619.88 : x
  2. Step 2: Convert to fraction form
    1,639.92/2,272.44 = 1,619.88/x
  3. Step 3: Cross multiply
    1,639.92x = 2,272.44 × 1,619.88
  4. Step 4: Simplify right side
    1,639.92x = 3,681,080.11
  5. Step 5: Solve for x
    x = 3,681,080.11/1,639.92
  6. Step 6: Final answer
    x = 2,244.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.