Home / 2,311.93-3,190.83-1,818.32

Finding the Fourth Proportional to 2,311.93, 3,190.83 and 1,818.32

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Solution

The fourth proportional to 2,311.93, 3,190.83 and 1,818.32 is: 2,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.93 : 3,190.83 = 1,818.32 : x
  2. Step 2: Convert to fraction form
    2,311.93/3,190.83 = 1,818.32/x
  3. Step 3: Cross multiply
    2,311.93x = 3,190.83 × 1,818.32
  4. Step 4: Simplify right side
    2,311.93x = 5,801,934.05
  5. Step 5: Solve for x
    x = 5,801,934.05/2,311.93
  6. Step 6: Final answer
    x = 2,509.57

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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.