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Finding the Fourth Proportional to 8,193.88, 12,307.38 and 4,913.20

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Solution

The fourth proportional to 8,193.88, 12,307.38 and 4,913.20 is: 7,379.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,193.88 : 12,307.38 = 4,913.20 : x
  2. Step 2: Convert to fraction form
    8,193.88/12,307.38 = 4,913.20/x
  3. Step 3: Cross multiply
    8,193.88x = 12,307.38 × 4,913.20
  4. Step 4: Simplify right side
    8,193.88x = 60,468,619.42
  5. Step 5: Solve for x
    x = 60,468,619.42/8,193.88
  6. Step 6: Final answer
    x = 7,379.73

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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.