Home / 3,964.60-5,471.07-2,172.13

Finding the Fourth Proportional to 3,964.60, 5,471.07 and 2,172.13

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Solution

The fourth proportional to 3,964.60, 5,471.07 and 2,172.13 is: 2,997.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.60 : 5,471.07 = 2,172.13 : x
  2. Step 2: Convert to fraction form
    3,964.60/5,471.07 = 2,172.13/x
  3. Step 3: Cross multiply
    3,964.60x = 5,471.07 × 2,172.13
  4. Step 4: Simplify right side
    3,964.60x = 11,883,875.28
  5. Step 5: Solve for x
    x = 11,883,875.28/3,964.60
  6. Step 6: Final answer
    x = 2,997.50

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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.