Home / 3,620.80-5,427.60-1,669.60

Finding the Fourth Proportional to 3,620.80, 5,427.60 and 1,669.60

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Solution

The fourth proportional to 3,620.80, 5,427.60 and 1,669.60 is: 2,502.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.80 : 5,427.60 = 1,669.60 : x
  2. Step 2: Convert to fraction form
    3,620.80/5,427.60 = 1,669.60/x
  3. Step 3: Cross multiply
    3,620.80x = 5,427.60 × 1,669.60
  4. Step 4: Simplify right side
    3,620.80x = 9,061,920.96
  5. Step 5: Solve for x
    x = 9,061,920.96/3,620.80
  6. Step 6: Final answer
    x = 2,502.74

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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.