Home / 8,124.46-12,187.31-2,578.12

Finding the Fourth Proportional to 8,124.46, 12,187.31 and 2,578.12

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Solution

The fourth proportional to 8,124.46, 12,187.31 and 2,578.12 is: 3,867.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.46 : 12,187.31 = 2,578.12 : x
  2. Step 2: Convert to fraction form
    8,124.46/12,187.31 = 2,578.12/x
  3. Step 3: Cross multiply
    8,124.46x = 12,187.31 × 2,578.12
  4. Step 4: Simplify right side
    8,124.46x = 31,420,347.66
  5. Step 5: Solve for x
    x = 31,420,347.66/8,124.46
  6. Step 6: Final answer
    x = 3,867.38

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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.