Home / 2,147.80-3,222.32-1,052.80

Finding the Fourth Proportional to 2,147.80, 3,222.32 and 1,052.80

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Solution

The fourth proportional to 2,147.80, 3,222.32 and 1,052.80 is: 1,579.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,147.80 : 3,222.32 = 1,052.80 : x
  2. Step 2: Convert to fraction form
    2,147.80/3,222.32 = 1,052.80/x
  3. Step 3: Cross multiply
    2,147.80x = 3,222.32 × 1,052.80
  4. Step 4: Simplify right side
    2,147.80x = 3,392,458.50
  5. Step 5: Solve for x
    x = 3,392,458.50/2,147.80
  6. Step 6: Final answer
    x = 1,579.50

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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.