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Finding the Fourth Proportional to 2,826.90, 4,239.99 and 852.57

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Solution

The fourth proportional to 2,826.90, 4,239.99 and 852.57 is: 1,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,826.90 : 4,239.99 = 852.57 : x
  2. Step 2: Convert to fraction form
    2,826.90/4,239.99 = 852.57/x
  3. Step 3: Cross multiply
    2,826.90x = 4,239.99 × 852.57
  4. Step 4: Simplify right side
    2,826.90x = 3,614,888.27
  5. Step 5: Solve for x
    x = 3,614,888.27/2,826.90
  6. Step 6: Final answer
    x = 1,278.75

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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.