Home / 1,276.44-1,762.20-1,188.96

Finding the Fourth Proportional to 1,276.44, 1,762.20 and 1,188.96

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Solution

The fourth proportional to 1,276.44, 1,762.20 and 1,188.96 is: 1,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.44 : 1,762.20 = 1,188.96 : x
  2. Step 2: Convert to fraction form
    1,276.44/1,762.20 = 1,188.96/x
  3. Step 3: Cross multiply
    1,276.44x = 1,762.20 × 1,188.96
  4. Step 4: Simplify right side
    1,276.44x = 2,095,185.31
  5. Step 5: Solve for x
    x = 2,095,185.31/1,276.44
  6. Step 6: Final answer
    x = 1,641.43

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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.