Home / 3,478.46-5,215.21-1,628.56

Finding the Fourth Proportional to 3,478.46, 5,215.21 and 1,628.56

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Solution

The fourth proportional to 3,478.46, 5,215.21 and 1,628.56 is: 2,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.46 : 5,215.21 = 1,628.56 : x
  2. Step 2: Convert to fraction form
    3,478.46/5,215.21 = 1,628.56/x
  3. Step 3: Cross multiply
    3,478.46x = 5,215.21 × 1,628.56
  4. Step 4: Simplify right side
    3,478.46x = 8,493,282.40
  5. Step 5: Solve for x
    x = 8,493,282.40/3,478.46
  6. Step 6: Final answer
    x = 2,441.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.