Home / 3,213.21-4,435.67-1,886.99

Finding the Fourth Proportional to 3,213.21, 4,435.67 and 1,886.99

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Solution

The fourth proportional to 3,213.21, 4,435.67 and 1,886.99 is: 2,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.21 : 4,435.67 = 1,886.99 : x
  2. Step 2: Convert to fraction form
    3,213.21/4,435.67 = 1,886.99/x
  3. Step 3: Cross multiply
    3,213.21x = 4,435.67 × 1,886.99
  4. Step 4: Simplify right side
    3,213.21x = 8,370,064.93
  5. Step 5: Solve for x
    x = 8,370,064.93/3,213.21
  6. Step 6: Final answer
    x = 2,604.89

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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.