Home / 5,238.20-7,228.71-2,880.51

Finding the Fourth Proportional to 5,238.20, 7,228.71 and 2,880.51

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Solution

The fourth proportional to 5,238.20, 7,228.71 and 2,880.51 is: 3,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.20 : 7,228.71 = 2,880.51 : x
  2. Step 2: Convert to fraction form
    5,238.20/7,228.71 = 2,880.51/x
  3. Step 3: Cross multiply
    5,238.20x = 7,228.71 × 2,880.51
  4. Step 4: Simplify right side
    5,238.20x = 20,822,371.44
  5. Step 5: Solve for x
    x = 20,822,371.44/5,238.20
  6. Step 6: Final answer
    x = 3,975.10

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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.