Home / 1,639.44-2,455.92-1,313.28

Finding the Fourth Proportional to 1,639.44, 2,455.92 and 1,313.28

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Solution

The fourth proportional to 1,639.44, 2,455.92 and 1,313.28 is: 1,967.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.44 : 2,455.92 = 1,313.28 : x
  2. Step 2: Convert to fraction form
    1,639.44/2,455.92 = 1,313.28/x
  3. Step 3: Cross multiply
    1,639.44x = 2,455.92 × 1,313.28
  4. Step 4: Simplify right side
    1,639.44x = 3,225,310.62
  5. Step 5: Solve for x
    x = 3,225,310.62/1,639.44
  6. Step 6: Final answer
    x = 1,967.32

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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.