Home / 4,078.60-5,628.46-2,215.60

Finding the Fourth Proportional to 4,078.60, 5,628.46 and 2,215.60

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Solution

The fourth proportional to 4,078.60, 5,628.46 and 2,215.60 is: 3,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.60 : 5,628.46 = 2,215.60 : x
  2. Step 2: Convert to fraction form
    4,078.60/5,628.46 = 2,215.60/x
  3. Step 3: Cross multiply
    4,078.60x = 5,628.46 × 2,215.60
  4. Step 4: Simplify right side
    4,078.60x = 12,470,396.37
  5. Step 5: Solve for x
    x = 12,470,396.37/4,078.60
  6. Step 6: Final answer
    x = 3,057.52

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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.