Home / 3,185.71-4,778.57-1,211.34

Finding the Fourth Proportional to 3,185.71, 4,778.57 and 1,211.34

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Solution

The fourth proportional to 3,185.71, 4,778.57 and 1,211.34 is: 1,817.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.71 : 4,778.57 = 1,211.34 : x
  2. Step 2: Convert to fraction form
    3,185.71/4,778.57 = 1,211.34/x
  3. Step 3: Cross multiply
    3,185.71x = 4,778.57 × 1,211.34
  4. Step 4: Simplify right side
    3,185.71x = 5,788,472.98
  5. Step 5: Solve for x
    x = 5,788,472.98/3,185.71
  6. Step 6: Final answer
    x = 1,817.01

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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.