Home / 2,814.84-4,222.32-2,688.48

Finding the Fourth Proportional to 2,814.84, 4,222.32 and 2,688.48

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Solution

The fourth proportional to 2,814.84, 4,222.32 and 2,688.48 is: 4,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.84 : 4,222.32 = 2,688.48 : x
  2. Step 2: Convert to fraction form
    2,814.84/4,222.32 = 2,688.48/x
  3. Step 3: Cross multiply
    2,814.84x = 4,222.32 × 2,688.48
  4. Step 4: Simplify right side
    2,814.84x = 11,351,622.87
  5. Step 5: Solve for x
    x = 11,351,622.87/2,814.84
  6. Step 6: Final answer
    x = 4,032.78

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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.