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Finding the Fourth Proportional to 8,340.94, 12,525.71 and 7,405.99

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Solution

The fourth proportional to 8,340.94, 12,525.71 and 7,405.99 is: 11,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.94 : 12,525.71 = 7,405.99 : x
  2. Step 2: Convert to fraction form
    8,340.94/12,525.71 = 7,405.99/x
  3. Step 3: Cross multiply
    8,340.94x = 12,525.71 × 7,405.99
  4. Step 4: Simplify right side
    8,340.94x = 92,765,283.00
  5. Step 5: Solve for x
    x = 92,765,283.00/8,340.94
  6. Step 6: Final answer
    x = 11,121.69

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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.