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Finding the Fourth Proportional to 8,662.23, 12,903.93 and 8,124.39

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Solution

The fourth proportional to 8,662.23, 12,903.93 and 8,124.39 is: 12,102.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.23 : 12,903.93 = 8,124.39 : x
  2. Step 2: Convert to fraction form
    8,662.23/12,903.93 = 8,124.39/x
  3. Step 3: Cross multiply
    8,662.23x = 12,903.93 × 8,124.39
  4. Step 4: Simplify right side
    8,662.23x = 104,836,559.85
  5. Step 5: Solve for x
    x = 104,836,559.85/8,662.23
  6. Step 6: Final answer
    x = 12,102.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.