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Finding the Fourth Proportional to 8,557.30, 12,835.77 and 3,940.30

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Solution

The fourth proportional to 8,557.30, 12,835.77 and 3,940.30 is: 5,910.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.30 : 12,835.77 = 3,940.30 : x
  2. Step 2: Convert to fraction form
    8,557.30/12,835.77 = 3,940.30/x
  3. Step 3: Cross multiply
    8,557.30x = 12,835.77 × 3,940.30
  4. Step 4: Simplify right side
    8,557.30x = 50,576,784.53
  5. Step 5: Solve for x
    x = 50,576,784.53/8,557.30
  6. Step 6: Final answer
    x = 5,910.37

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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.