Home / 8,425.87-12,639.13-2,185.72

Finding the Fourth Proportional to 8,425.87, 12,639.13 and 2,185.72

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Solution

The fourth proportional to 8,425.87, 12,639.13 and 2,185.72 is: 3,278.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.87 : 12,639.13 = 2,185.72 : x
  2. Step 2: Convert to fraction form
    8,425.87/12,639.13 = 2,185.72/x
  3. Step 3: Cross multiply
    8,425.87x = 12,639.13 × 2,185.72
  4. Step 4: Simplify right side
    8,425.87x = 27,625,599.22
  5. Step 5: Solve for x
    x = 27,625,599.22/8,425.87
  6. Step 6: Final answer
    x = 3,278.66

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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.