Home / 2,191.28-3,285.92-1,368.32

Finding the Fourth Proportional to 2,191.28, 3,285.92 and 1,368.32

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Solution

The fourth proportional to 2,191.28, 3,285.92 and 1,368.32 is: 2,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.28 : 3,285.92 = 1,368.32 : x
  2. Step 2: Convert to fraction form
    2,191.28/3,285.92 = 1,368.32/x
  3. Step 3: Cross multiply
    2,191.28x = 3,285.92 × 1,368.32
  4. Step 4: Simplify right side
    2,191.28x = 4,496,190.05
  5. Step 5: Solve for x
    x = 4,496,190.05/2,191.28
  6. Step 6: Final answer
    x = 2,051.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.