Home / 8,418.75-12,630.45-3,675.31

Finding the Fourth Proportional to 8,418.75, 12,630.45 and 3,675.31

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Solution

The fourth proportional to 8,418.75, 12,630.45 and 3,675.31 is: 5,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.75 : 12,630.45 = 3,675.31 : x
  2. Step 2: Convert to fraction form
    8,418.75/12,630.45 = 3,675.31/x
  3. Step 3: Cross multiply
    8,418.75x = 12,630.45 × 3,675.31
  4. Step 4: Simplify right side
    8,418.75x = 46,420,819.19
  5. Step 5: Solve for x
    x = 46,420,819.19/8,418.75
  6. Step 6: Final answer
    x = 5,513.98

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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.