Home / 3,072.20-4,608.30-1,970.60

Finding the Fourth Proportional to 3,072.20, 4,608.30 and 1,970.60

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Solution

The fourth proportional to 3,072.20, 4,608.30 and 1,970.60 is: 2,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.20 : 4,608.30 = 1,970.60 : x
  2. Step 2: Convert to fraction form
    3,072.20/4,608.30 = 1,970.60/x
  3. Step 3: Cross multiply
    3,072.20x = 4,608.30 × 1,970.60
  4. Step 4: Simplify right side
    3,072.20x = 9,081,115.98
  5. Step 5: Solve for x
    x = 9,081,115.98/3,072.20
  6. Step 6: Final answer
    x = 2,955.90

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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.