Home / 2,611.15-3,913.95-1,223.31

Finding the Fourth Proportional to 2,611.15, 3,913.95 and 1,223.31

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Solution

The fourth proportional to 2,611.15, 3,913.95 and 1,223.31 is: 1,833.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.15 : 3,913.95 = 1,223.31 : x
  2. Step 2: Convert to fraction form
    2,611.15/3,913.95 = 1,223.31/x
  3. Step 3: Cross multiply
    2,611.15x = 3,913.95 × 1,223.31
  4. Step 4: Simplify right side
    2,611.15x = 4,787,993.44
  5. Step 5: Solve for x
    x = 4,787,993.44/2,611.15
  6. Step 6: Final answer
    x = 1,833.67

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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.