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Finding the Fourth Proportional to 3,078.97, 4,619.10 and 999.01

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Solution

The fourth proportional to 3,078.97, 4,619.10 and 999.01 is: 1,498.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.97 : 4,619.10 = 999.01 : x
  2. Step 2: Convert to fraction form
    3,078.97/4,619.10 = 999.01/x
  3. Step 3: Cross multiply
    3,078.97x = 4,619.10 × 999.01
  4. Step 4: Simplify right side
    3,078.97x = 4,614,546.88
  5. Step 5: Solve for x
    x = 4,614,546.88/3,078.97
  6. Step 6: Final answer
    x = 1,498.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.