Home / 7,137.84-10,708.40-2,755.20

Finding the Fourth Proportional to 7,137.84, 10,708.40 and 2,755.20

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Solution

The fourth proportional to 7,137.84, 10,708.40 and 2,755.20 is: 4,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.84 : 10,708.40 = 2,755.20 : x
  2. Step 2: Convert to fraction form
    7,137.84/10,708.40 = 2,755.20/x
  3. Step 3: Cross multiply
    7,137.84x = 10,708.40 × 2,755.20
  4. Step 4: Simplify right side
    7,137.84x = 29,503,783.68
  5. Step 5: Solve for x
    x = 29,503,783.68/7,137.84
  6. Step 6: Final answer
    x = 4,133.43

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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.