Home / 2,211.45-3,314.43-1,938.07

Finding the Fourth Proportional to 2,211.45, 3,314.43 and 1,938.07

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Solution

The fourth proportional to 2,211.45, 3,314.43 and 1,938.07 is: 2,904.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.45 : 3,314.43 = 1,938.07 : x
  2. Step 2: Convert to fraction form
    2,211.45/3,314.43 = 1,938.07/x
  3. Step 3: Cross multiply
    2,211.45x = 3,314.43 × 1,938.07
  4. Step 4: Simplify right side
    2,211.45x = 6,423,597.35
  5. Step 5: Solve for x
    x = 6,423,597.35/2,211.45
  6. Step 6: Final answer
    x = 2,904.71

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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.