Home / 1,691.37-2,331.54-1,192.59

Finding the Fourth Proportional to 1,691.37, 2,331.54 and 1,192.59

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Solution

The fourth proportional to 1,691.37, 2,331.54 and 1,192.59 is: 1,643.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.37 : 2,331.54 = 1,192.59 : x
  2. Step 2: Convert to fraction form
    1,691.37/2,331.54 = 1,192.59/x
  3. Step 3: Cross multiply
    1,691.37x = 2,331.54 × 1,192.59
  4. Step 4: Simplify right side
    1,691.37x = 2,780,571.29
  5. Step 5: Solve for x
    x = 2,780,571.29/1,691.37
  6. Step 6: Final answer
    x = 1,643.98

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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.