Home / 4,078.50-5,628.36-2,215.50

Finding the Fourth Proportional to 4,078.50, 5,628.36 and 2,215.50

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Solution

The fourth proportional to 4,078.50, 5,628.36 and 2,215.50 is: 3,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.50 : 5,628.36 = 2,215.50 : x
  2. Step 2: Convert to fraction form
    4,078.50/5,628.36 = 2,215.50/x
  3. Step 3: Cross multiply
    4,078.50x = 5,628.36 × 2,215.50
  4. Step 4: Simplify right side
    4,078.50x = 12,469,631.58
  5. Step 5: Solve for x
    x = 12,469,631.58/4,078.50
  6. Step 6: Final answer
    x = 3,057.41

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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.