Home / 2,219.76-3,063.96-2,146.80

Finding the Fourth Proportional to 2,219.76, 3,063.96 and 2,146.80

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Solution

The fourth proportional to 2,219.76, 3,063.96 and 2,146.80 is: 2,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.76 : 3,063.96 = 2,146.80 : x
  2. Step 2: Convert to fraction form
    2,219.76/3,063.96 = 2,146.80/x
  3. Step 3: Cross multiply
    2,219.76x = 3,063.96 × 2,146.80
  4. Step 4: Simplify right side
    2,219.76x = 6,577,709.33
  5. Step 5: Solve for x
    x = 6,577,709.33/2,219.76
  6. Step 6: Final answer
    x = 2,963.25

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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.