Home / 1,639.44-2,262.26-976.21

Finding the Fourth Proportional to 1,639.44, 2,262.26 and 976.21

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Solution

The fourth proportional to 1,639.44, 2,262.26 and 976.21 is: 1,347.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.44 : 2,262.26 = 976.21 : x
  2. Step 2: Convert to fraction form
    1,639.44/2,262.26 = 976.21/x
  3. Step 3: Cross multiply
    1,639.44x = 2,262.26 × 976.21
  4. Step 4: Simplify right side
    1,639.44x = 2,208,424.64
  5. Step 5: Solve for x
    x = 2,208,424.64/1,639.44
  6. Step 6: Final answer
    x = 1,347.06

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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.