Home / 3,455.48-5,183.28-858.36

Finding the Fourth Proportional to 3,455.48, 5,183.28 and 858.36

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Solution

The fourth proportional to 3,455.48, 5,183.28 and 858.36 is: 1,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.48 : 5,183.28 = 858.36 : x
  2. Step 2: Convert to fraction form
    3,455.48/5,183.28 = 858.36/x
  3. Step 3: Cross multiply
    3,455.48x = 5,183.28 × 858.36
  4. Step 4: Simplify right side
    3,455.48x = 4,449,120.22
  5. Step 5: Solve for x
    x = 4,449,120.22/3,455.48
  6. Step 6: Final answer
    x = 1,287.55

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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.