Home / 1,908.54-2,633.19-1,287.66

Finding the Fourth Proportional to 1,908.54, 2,633.19 and 1,287.66

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Solution

The fourth proportional to 1,908.54, 2,633.19 and 1,287.66 is: 1,776.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.54 : 2,633.19 = 1,287.66 : x
  2. Step 2: Convert to fraction form
    1,908.54/2,633.19 = 1,287.66/x
  3. Step 3: Cross multiply
    1,908.54x = 2,633.19 × 1,287.66
  4. Step 4: Simplify right side
    1,908.54x = 3,390,653.44
  5. Step 5: Solve for x
    x = 3,390,653.44/1,908.54
  6. Step 6: Final answer
    x = 1,776.57

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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.