Home / 3,261.27-4,892.19-921.30

Finding the Fourth Proportional to 3,261.27, 4,892.19 and 921.30

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Solution

The fourth proportional to 3,261.27, 4,892.19 and 921.30 is: 1,382.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.27 : 4,892.19 = 921.30 : x
  2. Step 2: Convert to fraction form
    3,261.27/4,892.19 = 921.30/x
  3. Step 3: Cross multiply
    3,261.27x = 4,892.19 × 921.30
  4. Step 4: Simplify right side
    3,261.27x = 4,507,174.65
  5. Step 5: Solve for x
    x = 4,507,174.65/3,261.27
  6. Step 6: Final answer
    x = 1,382.03

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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.