Home / 2,799.36-3,863.34-1,620.45

Finding the Fourth Proportional to 2,799.36, 3,863.34 and 1,620.45

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Solution

The fourth proportional to 2,799.36, 3,863.34 and 1,620.45 is: 2,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.36 : 3,863.34 = 1,620.45 : x
  2. Step 2: Convert to fraction form
    2,799.36/3,863.34 = 1,620.45/x
  3. Step 3: Cross multiply
    2,799.36x = 3,863.34 × 1,620.45
  4. Step 4: Simplify right side
    2,799.36x = 6,260,349.30
  5. Step 5: Solve for x
    x = 6,260,349.30/2,799.36
  6. Step 6: Final answer
    x = 2,236.35

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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.