Home / 5,231.61-7,220.87-2,994.78

Finding the Fourth Proportional to 5,231.61, 7,220.87 and 2,994.78

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Solution

The fourth proportional to 5,231.61, 7,220.87 and 2,994.78 is: 4,133.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.61 : 7,220.87 = 2,994.78 : x
  2. Step 2: Convert to fraction form
    5,231.61/7,220.87 = 2,994.78/x
  3. Step 3: Cross multiply
    5,231.61x = 7,220.87 × 2,994.78
  4. Step 4: Simplify right side
    5,231.61x = 21,624,917.06
  5. Step 5: Solve for x
    x = 21,624,917.06/5,231.61
  6. Step 6: Final answer
    x = 4,133.51

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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.