Home / 2,313.05-3,213.40-2,291.43

Finding the Fourth Proportional to 2,313.05, 3,213.40 and 2,291.43

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Solution

The fourth proportional to 2,313.05, 3,213.40 and 2,291.43 is: 3,183.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.05 : 3,213.40 = 2,291.43 : x
  2. Step 2: Convert to fraction form
    2,313.05/3,213.40 = 2,291.43/x
  3. Step 3: Cross multiply
    2,313.05x = 3,213.40 × 2,291.43
  4. Step 4: Simplify right side
    2,313.05x = 7,363,263.38
  5. Step 5: Solve for x
    x = 7,363,263.38/2,313.05
  6. Step 6: Final answer
    x = 3,183.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.