Home / 3,656.32-5,485-1,190.34

Finding the Fourth Proportional to 3,656.32, 5,485 and 1,190.34

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Solution

The fourth proportional to 3,656.32, 5,485 and 1,190.34 is: 1,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.32 : 5,485 = 1,190.34 : x
  2. Step 2: Convert to fraction form
    3,656.32/5,485 = 1,190.34/x
  3. Step 3: Cross multiply
    3,656.32x = 5,485 × 1,190.34
  4. Step 4: Simplify right side
    3,656.32x = 6,529,014.90
  5. Step 5: Solve for x
    x = 6,529,014.90/3,656.32
  6. Step 6: Final answer
    x = 1,785.68

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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.