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Finding the Fourth Proportional to 2,809.56, 3,876.93 and 1,630.70

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Solution

The fourth proportional to 2,809.56, 3,876.93 and 1,630.70 is: 2,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.56 : 3,876.93 = 1,630.70 : x
  2. Step 2: Convert to fraction form
    2,809.56/3,876.93 = 1,630.70/x
  3. Step 3: Cross multiply
    2,809.56x = 3,876.93 × 1,630.70
  4. Step 4: Simplify right side
    2,809.56x = 6,322,090.37
  5. Step 5: Solve for x
    x = 6,322,090.37/2,809.56
  6. Step 6: Final answer
    x = 2,250.21

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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.