Home / 5,107.20-7,048.21-2,838.79

Finding the Fourth Proportional to 5,107.20, 7,048.21 and 2,838.79

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Solution

The fourth proportional to 5,107.20, 7,048.21 and 2,838.79 is: 3,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.20 : 7,048.21 = 2,838.79 : x
  2. Step 2: Convert to fraction form
    5,107.20/7,048.21 = 2,838.79/x
  3. Step 3: Cross multiply
    5,107.20x = 7,048.21 × 2,838.79
  4. Step 4: Simplify right side
    5,107.20x = 20,008,367.29
  5. Step 5: Solve for x
    x = 20,008,367.29/5,107.20
  6. Step 6: Final answer
    x = 3,917.68

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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.