Home / 5,238.27-7,228.71-2,880.36

Finding the Fourth Proportional to 5,238.27, 7,228.71 and 2,880.36

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Solution

The fourth proportional to 5,238.27, 7,228.71 and 2,880.36 is: 3,974.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.27 : 7,228.71 = 2,880.36 : x
  2. Step 2: Convert to fraction form
    5,238.27/7,228.71 = 2,880.36/x
  3. Step 3: Cross multiply
    5,238.27x = 7,228.71 × 2,880.36
  4. Step 4: Simplify right side
    5,238.27x = 20,821,287.14
  5. Step 5: Solve for x
    x = 20,821,287.14/5,238.27
  6. Step 6: Final answer
    x = 3,974.84

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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.