Home / 3,078.22-4,247.97-1,681.06

Finding the Fourth Proportional to 3,078.22, 4,247.97 and 1,681.06

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Solution

The fourth proportional to 3,078.22, 4,247.97 and 1,681.06 is: 2,319.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.22 : 4,247.97 = 1,681.06 : x
  2. Step 2: Convert to fraction form
    3,078.22/4,247.97 = 1,681.06/x
  3. Step 3: Cross multiply
    3,078.22x = 4,247.97 × 1,681.06
  4. Step 4: Simplify right side
    3,078.22x = 7,141,092.45
  5. Step 5: Solve for x
    x = 7,141,092.45/3,078.22
  6. Step 6: Final answer
    x = 2,319.88

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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.