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Finding the Fourth Proportional to 2,798.37, 3,859.19 and 2,238.86

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Solution

The fourth proportional to 2,798.37, 3,859.19 and 2,238.86 is: 3,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.37 : 3,859.19 = 2,238.86 : x
  2. Step 2: Convert to fraction form
    2,798.37/3,859.19 = 2,238.86/x
  3. Step 3: Cross multiply
    2,798.37x = 3,859.19 × 2,238.86
  4. Step 4: Simplify right side
    2,798.37x = 8,640,155.63
  5. Step 5: Solve for x
    x = 8,640,155.63/2,798.37
  6. Step 6: Final answer
    x = 3,087.57

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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.