Home / 3,219.66-4,438.98-2,776.68

Finding the Fourth Proportional to 3,219.66, 4,438.98 and 2,776.68

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Solution

The fourth proportional to 3,219.66, 4,438.98 and 2,776.68 is: 3,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.66 : 4,438.98 = 2,776.68 : x
  2. Step 2: Convert to fraction form
    3,219.66/4,438.98 = 2,776.68/x
  3. Step 3: Cross multiply
    3,219.66x = 4,438.98 × 2,776.68
  4. Step 4: Simplify right side
    3,219.66x = 12,325,626.99
  5. Step 5: Solve for x
    x = 12,325,626.99/3,219.66
  6. Step 6: Final answer
    x = 3,828.24

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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.