Home / 3,745.20-5,616.16-1,279.36

Finding the Fourth Proportional to 3,745.20, 5,616.16 and 1,279.36

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Solution

The fourth proportional to 3,745.20, 5,616.16 and 1,279.36 is: 1,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.20 : 5,616.16 = 1,279.36 : x
  2. Step 2: Convert to fraction form
    3,745.20/5,616.16 = 1,279.36/x
  3. Step 3: Cross multiply
    3,745.20x = 5,616.16 × 1,279.36
  4. Step 4: Simplify right side
    3,745.20x = 7,185,090.46
  5. Step 5: Solve for x
    x = 7,185,090.46/3,745.20
  6. Step 6: Final answer
    x = 1,918.48

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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.