Home / 2,191.19-3,025.86-1,406.60

Finding the Fourth Proportional to 2,191.19, 3,025.86 and 1,406.60

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Solution

The fourth proportional to 2,191.19, 3,025.86 and 1,406.60 is: 1,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.19 : 3,025.86 = 1,406.60 : x
  2. Step 2: Convert to fraction form
    2,191.19/3,025.86 = 1,406.60/x
  3. Step 3: Cross multiply
    2,191.19x = 3,025.86 × 1,406.60
  4. Step 4: Simplify right side
    2,191.19x = 4,256,165.62
  5. Step 5: Solve for x
    x = 4,256,165.62/2,191.19
  6. Step 6: Final answer
    x = 1,942.40

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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.