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Finding the Fourth Proportional to 8,278.50, 12,415.10 and 2,730.60

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Solution

The fourth proportional to 8,278.50, 12,415.10 and 2,730.60 is: 4,095.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.50 : 12,415.10 = 2,730.60 : x
  2. Step 2: Convert to fraction form
    8,278.50/12,415.10 = 2,730.60/x
  3. Step 3: Cross multiply
    8,278.50x = 12,415.10 × 2,730.60
  4. Step 4: Simplify right side
    8,278.50x = 33,900,672.06
  5. Step 5: Solve for x
    x = 33,900,672.06/8,278.50
  6. Step 6: Final answer
    x = 4,095.03

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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.