Home / 3,211.70-4,435.51-2,863.91

Finding the Fourth Proportional to 3,211.70, 4,435.51 and 2,863.91

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Solution

The fourth proportional to 3,211.70, 4,435.51 and 2,863.91 is: 3,955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.70 : 4,435.51 = 2,863.91 : x
  2. Step 2: Convert to fraction form
    3,211.70/4,435.51 = 2,863.91/x
  3. Step 3: Cross multiply
    3,211.70x = 4,435.51 × 2,863.91
  4. Step 4: Simplify right side
    3,211.70x = 12,702,885.79
  5. Step 5: Solve for x
    x = 12,702,885.79/3,211.70
  6. Step 6: Final answer
    x = 3,955.19

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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.