Home / 4,140.40-6,210.60-3,722.80

Finding the Fourth Proportional to 4,140.40, 6,210.60 and 3,722.80

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Solution

The fourth proportional to 4,140.40, 6,210.60 and 3,722.80 is: 5,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.40 : 6,210.60 = 3,722.80 : x
  2. Step 2: Convert to fraction form
    4,140.40/6,210.60 = 3,722.80/x
  3. Step 3: Cross multiply
    4,140.40x = 6,210.60 × 3,722.80
  4. Step 4: Simplify right side
    4,140.40x = 23,120,821.68
  5. Step 5: Solve for x
    x = 23,120,821.68/4,140.40
  6. Step 6: Final answer
    x = 5,584.20

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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.