Home / 2,770.45-3,824.63-2,139.56

Finding the Fourth Proportional to 2,770.45, 3,824.63 and 2,139.56

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Solution

The fourth proportional to 2,770.45, 3,824.63 and 2,139.56 is: 2,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.45 : 3,824.63 = 2,139.56 : x
  2. Step 2: Convert to fraction form
    2,770.45/3,824.63 = 2,139.56/x
  3. Step 3: Cross multiply
    2,770.45x = 3,824.63 × 2,139.56
  4. Step 4: Simplify right side
    2,770.45x = 8,183,040.27
  5. Step 5: Solve for x
    x = 8,183,040.27/2,770.45
  6. Step 6: Final answer
    x = 2,953.69

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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.