Home / 2,635.38-3,636.78-1,440.36

Finding the Fourth Proportional to 2,635.38, 3,636.78 and 1,440.36

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Solution

The fourth proportional to 2,635.38, 3,636.78 and 1,440.36 is: 1,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.38 : 3,636.78 = 1,440.36 : x
  2. Step 2: Convert to fraction form
    2,635.38/3,636.78 = 1,440.36/x
  3. Step 3: Cross multiply
    2,635.38x = 3,636.78 × 1,440.36
  4. Step 4: Simplify right side
    2,635.38x = 5,238,272.44
  5. Step 5: Solve for x
    x = 5,238,272.44/2,635.38
  6. Step 6: Final answer
    x = 1,987.67

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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.