Home / 2,311.54-3,467.33-1,287.70

Finding the Fourth Proportional to 2,311.54, 3,467.33 and 1,287.70

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Solution

The fourth proportional to 2,311.54, 3,467.33 and 1,287.70 is: 1,931.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.54 : 3,467.33 = 1,287.70 : x
  2. Step 2: Convert to fraction form
    2,311.54/3,467.33 = 1,287.70/x
  3. Step 3: Cross multiply
    2,311.54x = 3,467.33 × 1,287.70
  4. Step 4: Simplify right side
    2,311.54x = 4,464,880.84
  5. Step 5: Solve for x
    x = 4,464,880.84/2,311.54
  6. Step 6: Final answer
    x = 1,931.56

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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.