Home / 3,605.80-5,400.60-2,196.40

Finding the Fourth Proportional to 3,605.80, 5,400.60 and 2,196.40

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Solution

The fourth proportional to 3,605.80, 5,400.60 and 2,196.40 is: 3,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.80 : 5,400.60 = 2,196.40 : x
  2. Step 2: Convert to fraction form
    3,605.80/5,400.60 = 2,196.40/x
  3. Step 3: Cross multiply
    3,605.80x = 5,400.60 × 2,196.40
  4. Step 4: Simplify right side
    3,605.80x = 11,861,877.84
  5. Step 5: Solve for x
    x = 11,861,877.84/3,605.80
  6. Step 6: Final answer
    x = 3,289.67

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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.