Home / 3,078.45-4,247.06-1,897.47

Finding the Fourth Proportional to 3,078.45, 4,247.06 and 1,897.47

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Solution

The fourth proportional to 3,078.45, 4,247.06 and 1,897.47 is: 2,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.45 : 4,247.06 = 1,897.47 : x
  2. Step 2: Convert to fraction form
    3,078.45/4,247.06 = 1,897.47/x
  3. Step 3: Cross multiply
    3,078.45x = 4,247.06 × 1,897.47
  4. Step 4: Simplify right side
    3,078.45x = 8,058,659.45
  5. Step 5: Solve for x
    x = 8,058,659.45/3,078.45
  6. Step 6: Final answer
    x = 2,617.77

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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.