Home / 3,023.40-4,170.78-2,692.20

Finding the Fourth Proportional to 3,023.40, 4,170.78 and 2,692.20

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Solution

The fourth proportional to 3,023.40, 4,170.78 and 2,692.20 is: 3,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,023.40 : 4,170.78 = 2,692.20 : x
  2. Step 2: Convert to fraction form
    3,023.40/4,170.78 = 2,692.20/x
  3. Step 3: Cross multiply
    3,023.40x = 4,170.78 × 2,692.20
  4. Step 4: Simplify right side
    3,023.40x = 11,228,573.92
  5. Step 5: Solve for x
    x = 11,228,573.92/3,023.40
  6. Step 6: Final answer
    x = 3,713.89

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1.5x scale

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.