Home / 7,190.12-10,777.50-5,131.88

Finding the Fourth Proportional to 7,190.12, 10,777.50 and 5,131.88

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Solution

The fourth proportional to 7,190.12, 10,777.50 and 5,131.88 is: 7,692.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.12 : 10,777.50 = 5,131.88 : x
  2. Step 2: Convert to fraction form
    7,190.12/10,777.50 = 5,131.88/x
  3. Step 3: Cross multiply
    7,190.12x = 10,777.50 × 5,131.88
  4. Step 4: Simplify right side
    7,190.12x = 55,308,836.70
  5. Step 5: Solve for x
    x = 55,308,836.70/7,190.12
  6. Step 6: Final answer
    x = 7,692.34

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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.