Home / 2,180.02-3,270.72-720.22

Finding the Fourth Proportional to 2,180.02, 3,270.72 and 720.22

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Solution

The fourth proportional to 2,180.02, 3,270.72 and 720.22 is: 1,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.02 : 3,270.72 = 720.22 : x
  2. Step 2: Convert to fraction form
    2,180.02/3,270.72 = 720.22/x
  3. Step 3: Cross multiply
    2,180.02x = 3,270.72 × 720.22
  4. Step 4: Simplify right side
    2,180.02x = 2,355,637.96
  5. Step 5: Solve for x
    x = 2,355,637.96/2,180.02
  6. Step 6: Final answer
    x = 1,080.56

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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.