Home / 5,209.40-7,188.16-3,220.60

Finding the Fourth Proportional to 5,209.40, 7,188.16 and 3,220.60

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Solution

The fourth proportional to 5,209.40, 7,188.16 and 3,220.60 is: 4,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.40 : 7,188.16 = 3,220.60 : x
  2. Step 2: Convert to fraction form
    5,209.40/7,188.16 = 3,220.60/x
  3. Step 3: Cross multiply
    5,209.40x = 7,188.16 × 3,220.60
  4. Step 4: Simplify right side
    5,209.40x = 23,150,188.10
  5. Step 5: Solve for x
    x = 23,150,188.10/5,209.40
  6. Step 6: Final answer
    x = 4,443.93

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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.