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Finding the Fourth Proportional to 8,158.48, 12,238.08 and 8,146.96

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Solution

The fourth proportional to 8,158.48, 12,238.08 and 8,146.96 is: 12,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,158.48 : 12,238.08 = 8,146.96 : x
  2. Step 2: Convert to fraction form
    8,158.48/12,238.08 = 8,146.96/x
  3. Step 3: Cross multiply
    8,158.48x = 12,238.08 × 8,146.96
  4. Step 4: Simplify right side
    8,158.48x = 99,703,148.24
  5. Step 5: Solve for x
    x = 99,703,148.24/8,158.48
  6. Step 6: Final answer
    x = 12,220.80

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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.