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Finding the Fourth Proportional to 2,338.70, 3,220.85 and 2,287.67

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Solution

The fourth proportional to 2,338.70, 3,220.85 and 2,287.67 is: 3,150.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.70 : 3,220.85 = 2,287.67 : x
  2. Step 2: Convert to fraction form
    2,338.70/3,220.85 = 2,287.67/x
  3. Step 3: Cross multiply
    2,338.70x = 3,220.85 × 2,287.67
  4. Step 4: Simplify right side
    2,338.70x = 7,368,230.48
  5. Step 5: Solve for x
    x = 7,368,230.48/2,338.70
  6. Step 6: Final answer
    x = 3,150.57

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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.