Home / 2,208.78-3,048.24-1,277.28

Finding the Fourth Proportional to 2,208.78, 3,048.24 and 1,277.28

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Solution

The fourth proportional to 2,208.78, 3,048.24 and 1,277.28 is: 1,762.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.78 : 3,048.24 = 1,277.28 : x
  2. Step 2: Convert to fraction form
    2,208.78/3,048.24 = 1,277.28/x
  3. Step 3: Cross multiply
    2,208.78x = 3,048.24 × 1,277.28
  4. Step 4: Simplify right side
    2,208.78x = 3,893,455.99
  5. Step 5: Solve for x
    x = 3,893,455.99/2,208.78
  6. Step 6: Final answer
    x = 1,762.72

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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.