Home / 1,693.38-2,536.44-1,228.95

Finding the Fourth Proportional to 1,693.38, 2,536.44 and 1,228.95

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Solution

The fourth proportional to 1,693.38, 2,536.44 and 1,228.95 is: 1,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.38 : 2,536.44 = 1,228.95 : x
  2. Step 2: Convert to fraction form
    1,693.38/2,536.44 = 1,228.95/x
  3. Step 3: Cross multiply
    1,693.38x = 2,536.44 × 1,228.95
  4. Step 4: Simplify right side
    1,693.38x = 3,117,157.94
  5. Step 5: Solve for x
    x = 3,117,157.94/1,693.38
  6. Step 6: Final answer
    x = 1,840.79

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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.