Home / 3,300.21-4,555.07-2,181.20

Finding the Fourth Proportional to 3,300.21, 4,555.07 and 2,181.20

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Solution

The fourth proportional to 3,300.21, 4,555.07 and 2,181.20 is: 3,010.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,300.21 : 4,555.07 = 2,181.20 : x
  2. Step 2: Convert to fraction form
    3,300.21/4,555.07 = 2,181.20/x
  3. Step 3: Cross multiply
    3,300.21x = 4,555.07 × 2,181.20
  4. Step 4: Simplify right side
    3,300.21x = 9,935,485.00
  5. Step 5: Solve for x
    x = 9,935,485.00/3,300.21
  6. Step 6: Final answer
    x = 3,010.56

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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.