Home / 2,911.78-4,015.50-2,247.58

Finding the Fourth Proportional to 2,911.78, 4,015.50 and 2,247.58

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Solution

The fourth proportional to 2,911.78, 4,015.50 and 2,247.58 is: 3,099.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.78 : 4,015.50 = 2,247.58 : x
  2. Step 2: Convert to fraction form
    2,911.78/4,015.50 = 2,247.58/x
  3. Step 3: Cross multiply
    2,911.78x = 4,015.50 × 2,247.58
  4. Step 4: Simplify right side
    2,911.78x = 9,025,157.49
  5. Step 5: Solve for x
    x = 9,025,157.49/2,911.78
  6. Step 6: Final answer
    x = 3,099.53

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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.