Home / 2,191.25-3,023.93-1,406.36

Finding the Fourth Proportional to 2,191.25, 3,023.93 and 1,406.36

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Solution

The fourth proportional to 2,191.25, 3,023.93 and 1,406.36 is: 1,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.25 : 3,023.93 = 1,406.36 : x
  2. Step 2: Convert to fraction form
    2,191.25/3,023.93 = 1,406.36/x
  3. Step 3: Cross multiply
    2,191.25x = 3,023.93 × 1,406.36
  4. Step 4: Simplify right side
    2,191.25x = 4,252,734.19
  5. Step 5: Solve for x
    x = 4,252,734.19/2,191.25
  6. Step 6: Final answer
    x = 1,940.78

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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.