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Finding the Fourth Proportional to 2,670.01, 4,004.47 and 721.75

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Solution

The fourth proportional to 2,670.01, 4,004.47 and 721.75 is: 1,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.01 : 4,004.47 = 721.75 : x
  2. Step 2: Convert to fraction form
    2,670.01/4,004.47 = 721.75/x
  3. Step 3: Cross multiply
    2,670.01x = 4,004.47 × 721.75
  4. Step 4: Simplify right side
    2,670.01x = 2,890,226.22
  5. Step 5: Solve for x
    x = 2,890,226.22/2,670.01
  6. Step 6: Final answer
    x = 1,082.48

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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.