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Finding the Fourth Proportional to 3,205.71, 4,422.30 and 2,087.30

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Solution

The fourth proportional to 3,205.71, 4,422.30 and 2,087.30 is: 2,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.71 : 4,422.30 = 2,087.30 : x
  2. Step 2: Convert to fraction form
    3,205.71/4,422.30 = 2,087.30/x
  3. Step 3: Cross multiply
    3,205.71x = 4,422.30 × 2,087.30
  4. Step 4: Simplify right side
    3,205.71x = 9,230,670.02
  5. Step 5: Solve for x
    x = 9,230,670.02/3,205.71
  6. Step 6: Final answer
    x = 2,879.45

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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.