Home / 4,879.28-7,318.86-2,107.90

Finding the Fourth Proportional to 4,879.28, 7,318.86 and 2,107.90

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Solution

The fourth proportional to 4,879.28, 7,318.86 and 2,107.90 is: 3,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.28 : 7,318.86 = 2,107.90 : x
  2. Step 2: Convert to fraction form
    4,879.28/7,318.86 = 2,107.90/x
  3. Step 3: Cross multiply
    4,879.28x = 7,318.86 × 2,107.90
  4. Step 4: Simplify right side
    4,879.28x = 15,427,424.99
  5. Step 5: Solve for x
    x = 15,427,424.99/4,879.28
  6. Step 6: Final answer
    x = 3,161.82

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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.