Home / 2,520.21-3,777.03-1,286.58

Finding the Fourth Proportional to 2,520.21, 3,777.03 and 1,286.58

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Solution

The fourth proportional to 2,520.21, 3,777.03 and 1,286.58 is: 1,928.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.21 : 3,777.03 = 1,286.58 : x
  2. Step 2: Convert to fraction form
    2,520.21/3,777.03 = 1,286.58/x
  3. Step 3: Cross multiply
    2,520.21x = 3,777.03 × 1,286.58
  4. Step 4: Simplify right side
    2,520.21x = 4,859,451.26
  5. Step 5: Solve for x
    x = 4,859,451.26/2,520.21
  6. Step 6: Final answer
    x = 1,928.19

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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.