Home / 7,945.82-11,918.80-2,399.21

Finding the Fourth Proportional to 7,945.82, 11,918.80 and 2,399.21

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Solution

The fourth proportional to 7,945.82, 11,918.80 and 2,399.21 is: 3,598.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.82 : 11,918.80 = 2,399.21 : x
  2. Step 2: Convert to fraction form
    7,945.82/11,918.80 = 2,399.21/x
  3. Step 3: Cross multiply
    7,945.82x = 11,918.80 × 2,399.21
  4. Step 4: Simplify right side
    7,945.82x = 28,595,692.25
  5. Step 5: Solve for x
    x = 28,595,692.25/7,945.82
  6. Step 6: Final answer
    x = 3,598.84

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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.