Home / 5,238.20-7,228.83-2,880.34

Finding the Fourth Proportional to 5,238.20, 7,228.83 and 2,880.34

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Solution

The fourth proportional to 5,238.20, 7,228.83 and 2,880.34 is: 3,974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.20 : 7,228.83 = 2,880.34 : x
  2. Step 2: Convert to fraction form
    5,238.20/7,228.83 = 2,880.34/x
  3. Step 3: Cross multiply
    5,238.20x = 7,228.83 × 2,880.34
  4. Step 4: Simplify right side
    5,238.20x = 20,821,486.38
  5. Step 5: Solve for x
    x = 20,821,486.38/5,238.20
  6. Step 6: Final answer
    x = 3,974.93

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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.