Home / 3,120.45-4,306.64-2,002.65

Finding the Fourth Proportional to 3,120.45, 4,306.64 and 2,002.65

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Solution

The fourth proportional to 3,120.45, 4,306.64 and 2,002.65 is: 2,763.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.45 : 4,306.64 = 2,002.65 : x
  2. Step 2: Convert to fraction form
    3,120.45/4,306.64 = 2,002.65/x
  3. Step 3: Cross multiply
    3,120.45x = 4,306.64 × 2,002.65
  4. Step 4: Simplify right side
    3,120.45x = 8,624,692.60
  5. Step 5: Solve for x
    x = 8,624,692.60/3,120.45
  6. Step 6: Final answer
    x = 2,763.93

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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.