Home / 8,124.66-12,191.40-3,447.30

Finding the Fourth Proportional to 8,124.66, 12,191.40 and 3,447.30

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Solution

The fourth proportional to 8,124.66, 12,191.40 and 3,447.30 is: 5,172.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.66 : 12,191.40 = 3,447.30 : x
  2. Step 2: Convert to fraction form
    8,124.66/12,191.40 = 3,447.30/x
  3. Step 3: Cross multiply
    8,124.66x = 12,191.40 × 3,447.30
  4. Step 4: Simplify right side
    8,124.66x = 42,027,413.22
  5. Step 5: Solve for x
    x = 42,027,413.22/8,124.66
  6. Step 6: Final answer
    x = 5,172.82

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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.