Home / 2,812.78-4,222.14-2,298.70

Finding the Fourth Proportional to 2,812.78, 4,222.14 and 2,298.70

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Solution

The fourth proportional to 2,812.78, 4,222.14 and 2,298.70 is: 3,450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.78 : 4,222.14 = 2,298.70 : x
  2. Step 2: Convert to fraction form
    2,812.78/4,222.14 = 2,298.70/x
  3. Step 3: Cross multiply
    2,812.78x = 4,222.14 × 2,298.70
  4. Step 4: Simplify right side
    2,812.78x = 9,705,433.22
  5. Step 5: Solve for x
    x = 9,705,433.22/2,812.78
  6. Step 6: Final answer
    x = 3,450.48

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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.