Home / 2,219.45-3,062.99-1,287.95

Finding the Fourth Proportional to 2,219.45, 3,062.99 and 1,287.95

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Solution

The fourth proportional to 2,219.45, 3,062.99 and 1,287.95 is: 1,777.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.45 : 3,062.99 = 1,287.95 : x
  2. Step 2: Convert to fraction form
    2,219.45/3,062.99 = 1,287.95/x
  3. Step 3: Cross multiply
    2,219.45x = 3,062.99 × 1,287.95
  4. Step 4: Simplify right side
    2,219.45x = 3,944,977.97
  5. Step 5: Solve for x
    x = 3,944,977.97/2,219.45
  6. Step 6: Final answer
    x = 1,777.46

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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.