Home / 1,601.18-2,209.23-902.55

Finding the Fourth Proportional to 1,601.18, 2,209.23 and 902.55

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Solution

The fourth proportional to 1,601.18, 2,209.23 and 902.55 is: 1,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.18 : 2,209.23 = 902.55 : x
  2. Step 2: Convert to fraction form
    1,601.18/2,209.23 = 902.55/x
  3. Step 3: Cross multiply
    1,601.18x = 2,209.23 × 902.55
  4. Step 4: Simplify right side
    1,601.18x = 1,993,940.54
  5. Step 5: Solve for x
    x = 1,993,940.54/1,601.18
  6. Step 6: Final answer
    x = 1,245.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.