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Finding the Fourth Proportional to 3,679.94, 5,078.43 and 2,001.47

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Solution

The fourth proportional to 3,679.94, 5,078.43 and 2,001.47 is: 2,762.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.94 : 5,078.43 = 2,001.47 : x
  2. Step 2: Convert to fraction form
    3,679.94/5,078.43 = 2,001.47/x
  3. Step 3: Cross multiply
    3,679.94x = 5,078.43 × 2,001.47
  4. Step 4: Simplify right side
    3,679.94x = 10,164,325.29
  5. Step 5: Solve for x
    x = 10,164,325.29/3,679.94
  6. Step 6: Final answer
    x = 2,762.09

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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.