Home / 5,238.09-7,228.71-2,880.39

Finding the Fourth Proportional to 5,238.09, 7,228.71 and 2,880.39

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Solution

The fourth proportional to 5,238.09, 7,228.71 and 2,880.39 is: 3,975.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.09 : 7,228.71 = 2,880.39 : x
  2. Step 2: Convert to fraction form
    5,238.09/7,228.71 = 2,880.39/x
  3. Step 3: Cross multiply
    5,238.09x = 7,228.71 × 2,880.39
  4. Step 4: Simplify right side
    5,238.09x = 20,821,504.00
  5. Step 5: Solve for x
    x = 20,821,504.00/5,238.09
  6. Step 6: Final answer
    x = 3,975.02

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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.