Home / 3,669.40-5,500.50-1,720.60

Finding the Fourth Proportional to 3,669.40, 5,500.50 and 1,720.60

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Solution

The fourth proportional to 3,669.40, 5,500.50 and 1,720.60 is: 2,579.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.40 : 5,500.50 = 1,720.60 : x
  2. Step 2: Convert to fraction form
    3,669.40/5,500.50 = 1,720.60/x
  3. Step 3: Cross multiply
    3,669.40x = 5,500.50 × 1,720.60
  4. Step 4: Simplify right side
    3,669.40x = 9,464,160.30
  5. Step 5: Solve for x
    x = 9,464,160.30/3,669.40
  6. Step 6: Final answer
    x = 2,579.21

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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.