Home / 3,745.49-5,616.45-1,279.65

Finding the Fourth Proportional to 3,745.49, 5,616.45 and 1,279.65

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Solution

The fourth proportional to 3,745.49, 5,616.45 and 1,279.65 is: 1,918.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.49 : 5,616.45 = 1,279.65 : x
  2. Step 2: Convert to fraction form
    3,745.49/5,616.45 = 1,279.65/x
  3. Step 3: Cross multiply
    3,745.49x = 5,616.45 × 1,279.65
  4. Step 4: Simplify right side
    3,745.49x = 7,187,090.24
  5. Step 5: Solve for x
    x = 7,187,090.24/3,745.49
  6. Step 6: Final answer
    x = 1,918.86

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1.5x scale

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.