Home / 7,620.84-11,431.77-2,940.90

Finding the Fourth Proportional to 7,620.84, 11,431.77 and 2,940.90

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Solution

The fourth proportional to 7,620.84, 11,431.77 and 2,940.90 is: 4,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.84 : 11,431.77 = 2,940.90 : x
  2. Step 2: Convert to fraction form
    7,620.84/11,431.77 = 2,940.90/x
  3. Step 3: Cross multiply
    7,620.84x = 11,431.77 × 2,940.90
  4. Step 4: Simplify right side
    7,620.84x = 33,619,692.39
  5. Step 5: Solve for x
    x = 33,619,692.39/7,620.84
  6. Step 6: Final answer
    x = 4,411.55

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1.5x scale

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.