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Finding the Fourth Proportional to 3,259.39, 4,890.45 and 3,000.90

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Solution

The fourth proportional to 3,259.39, 4,890.45 and 3,000.90 is: 4,502.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,259.39 : 4,890.45 = 3,000.90 : x
  2. Step 2: Convert to fraction form
    3,259.39/4,890.45 = 3,000.90/x
  3. Step 3: Cross multiply
    3,259.39x = 4,890.45 × 3,000.90
  4. Step 4: Simplify right side
    3,259.39x = 14,675,745.05
  5. Step 5: Solve for x
    x = 14,675,745.05/3,259.39
  6. Step 6: Final answer
    x = 4,502.61

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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.