Home / 3,211.65-4,429.35-2,216.43

Finding the Fourth Proportional to 3,211.65, 4,429.35 and 2,216.43

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Solution

The fourth proportional to 3,211.65, 4,429.35 and 2,216.43 is: 3,056.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.65 : 4,429.35 = 2,216.43 : x
  2. Step 2: Convert to fraction form
    3,211.65/4,429.35 = 2,216.43/x
  3. Step 3: Cross multiply
    3,211.65x = 4,429.35 × 2,216.43
  4. Step 4: Simplify right side
    3,211.65x = 9,817,344.22
  5. Step 5: Solve for x
    x = 9,817,344.22/3,211.65
  6. Step 6: Final answer
    x = 3,056.79

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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.