Home / 2,206.90-3,043.94-1,420.19

Finding the Fourth Proportional to 2,206.90, 3,043.94 and 1,420.19

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Solution

The fourth proportional to 2,206.90, 3,043.94 and 1,420.19 is: 1,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.90 : 3,043.94 = 1,420.19 : x
  2. Step 2: Convert to fraction form
    2,206.90/3,043.94 = 1,420.19/x
  3. Step 3: Cross multiply
    2,206.90x = 3,043.94 × 1,420.19
  4. Step 4: Simplify right side
    2,206.90x = 4,322,973.15
  5. Step 5: Solve for x
    x = 4,322,973.15/2,206.90
  6. Step 6: Final answer
    x = 1,958.84

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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.