Home / 3,069.80-4,605.30-1,220.60

Finding the Fourth Proportional to 3,069.80, 4,605.30 and 1,220.60

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Solution

The fourth proportional to 3,069.80, 4,605.30 and 1,220.60 is: 1,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,069.80 : 4,605.30 = 1,220.60 : x
  2. Step 2: Convert to fraction form
    3,069.80/4,605.30 = 1,220.60/x
  3. Step 3: Cross multiply
    3,069.80x = 4,605.30 × 1,220.60
  4. Step 4: Simplify right side
    3,069.80x = 5,621,229.18
  5. Step 5: Solve for x
    x = 5,621,229.18/3,069.80
  6. Step 6: Final answer
    x = 1,831.14

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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.