Home / 3,617.44-5,420.48-2,155.79

Finding the Fourth Proportional to 3,617.44, 5,420.48 and 2,155.79

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Solution

The fourth proportional to 3,617.44, 5,420.48 and 2,155.79 is: 3,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.44 : 5,420.48 = 2,155.79 : x
  2. Step 2: Convert to fraction form
    3,617.44/5,420.48 = 2,155.79/x
  3. Step 3: Cross multiply
    3,617.44x = 5,420.48 × 2,155.79
  4. Step 4: Simplify right side
    3,617.44x = 11,685,416.58
  5. Step 5: Solve for x
    x = 11,685,416.58/3,617.44
  6. Step 6: Final answer
    x = 3,230.30

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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.