Home / 2,809.16-3,876.60-1,630.90

Finding the Fourth Proportional to 2,809.16, 3,876.60 and 1,630.90

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Solution

The fourth proportional to 2,809.16, 3,876.60 and 1,630.90 is: 2,250.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.16 : 3,876.60 = 1,630.90 : x
  2. Step 2: Convert to fraction form
    2,809.16/3,876.60 = 1,630.90/x
  3. Step 3: Cross multiply
    2,809.16x = 3,876.60 × 1,630.90
  4. Step 4: Simplify right side
    2,809.16x = 6,322,346.94
  5. Step 5: Solve for x
    x = 6,322,346.94/2,809.16
  6. Step 6: Final answer
    x = 2,250.62

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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.