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Finding the Fourth Proportional to 8,050.59, 12,078.59 and 3,120.39

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Solution

The fourth proportional to 8,050.59, 12,078.59 and 3,120.39 is: 4,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,050.59 : 12,078.59 = 3,120.39 : x
  2. Step 2: Convert to fraction form
    8,050.59/12,078.59 = 3,120.39/x
  3. Step 3: Cross multiply
    8,050.59x = 12,078.59 × 3,120.39
  4. Step 4: Simplify right side
    8,050.59x = 37,689,895.85
  5. Step 5: Solve for x
    x = 37,689,895.85/8,050.59
  6. Step 6: Final answer
    x = 4,681.63

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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.