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Finding the Fourth Proportional to 2,800.12, 4,199.88 and 852.34

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Solution

The fourth proportional to 2,800.12, 4,199.88 and 852.34 is: 1,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.12 : 4,199.88 = 852.34 : x
  2. Step 2: Convert to fraction form
    2,800.12/4,199.88 = 852.34/x
  3. Step 3: Cross multiply
    2,800.12x = 4,199.88 × 852.34
  4. Step 4: Simplify right side
    2,800.12x = 3,579,725.72
  5. Step 5: Solve for x
    x = 3,579,725.72/2,800.12
  6. Step 6: Final answer
    x = 1,278.42

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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.