Home / 4,078.28-5,628-2,215.28

Finding the Fourth Proportional to 4,078.28, 5,628 and 2,215.28

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Solution

The fourth proportional to 4,078.28, 5,628 and 2,215.28 is: 3,057.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.28 : 5,628 = 2,215.28 : x
  2. Step 2: Convert to fraction form
    4,078.28/5,628 = 2,215.28/x
  3. Step 3: Cross multiply
    4,078.28x = 5,628 × 2,215.28
  4. Step 4: Simplify right side
    4,078.28x = 12,467,595.84
  5. Step 5: Solve for x
    x = 12,467,595.84/4,078.28
  6. Step 6: Final answer
    x = 3,057.07

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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.