Home / 1,110.15-1,661.98-674.37

Finding the Fourth Proportional to 1,110.15, 1,661.98 and 674.37

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Solution

The fourth proportional to 1,110.15, 1,661.98 and 674.37 is: 1,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,110.15 : 1,661.98 = 674.37 : x
  2. Step 2: Convert to fraction form
    1,110.15/1,661.98 = 674.37/x
  3. Step 3: Cross multiply
    1,110.15x = 1,661.98 × 674.37
  4. Step 4: Simplify right side
    1,110.15x = 1,120,789.45
  5. Step 5: Solve for x
    x = 1,120,789.45/1,110.15
  6. Step 6: Final answer
    x = 1,009.58

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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.