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Finding the Fourth Proportional to 8,940.54, 12,329.46 and 6,515.71

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Solution

The fourth proportional to 8,940.54, 12,329.46 and 6,515.71 is: 8,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.54 : 12,329.46 = 6,515.71 : x
  2. Step 2: Convert to fraction form
    8,940.54/12,329.46 = 6,515.71/x
  3. Step 3: Cross multiply
    8,940.54x = 12,329.46 × 6,515.71
  4. Step 4: Simplify right side
    8,940.54x = 80,335,185.82
  5. Step 5: Solve for x
    x = 80,335,185.82/8,940.54
  6. Step 6: Final answer
    x = 8,985.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.