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Finding the Fourth Proportional to 2,841.86, 3,921.34 and 1,630.37

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Solution

The fourth proportional to 2,841.86, 3,921.34 and 1,630.37 is: 2,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.86 : 3,921.34 = 1,630.37 : x
  2. Step 2: Convert to fraction form
    2,841.86/3,921.34 = 1,630.37/x
  3. Step 3: Cross multiply
    2,841.86x = 3,921.34 × 1,630.37
  4. Step 4: Simplify right side
    2,841.86x = 6,393,235.10
  5. Step 5: Solve for x
    x = 6,393,235.10/2,841.86
  6. Step 6: Final answer
    x = 2,249.67

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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.