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Finding the Fourth Proportional to 2,260.85, 3,391.78 and 874.19

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Solution

The fourth proportional to 2,260.85, 3,391.78 and 874.19 is: 1,311.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.85 : 3,391.78 = 874.19 : x
  2. Step 2: Convert to fraction form
    2,260.85/3,391.78 = 874.19/x
  3. Step 3: Cross multiply
    2,260.85x = 3,391.78 × 874.19
  4. Step 4: Simplify right side
    2,260.85x = 2,965,066.45
  5. Step 5: Solve for x
    x = 2,965,066.45/2,260.85
  6. Step 6: Final answer
    x = 1,311.49

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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.