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Finding the Fourth Proportional to 8,339.93, 12,425.95 and 8,219.65

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Solution

The fourth proportional to 8,339.93, 12,425.95 and 8,219.65 is: 12,246.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.93 : 12,425.95 = 8,219.65 : x
  2. Step 2: Convert to fraction form
    8,339.93/12,425.95 = 8,219.65/x
  3. Step 3: Cross multiply
    8,339.93x = 12,425.95 × 8,219.65
  4. Step 4: Simplify right side
    8,339.93x = 102,136,926.46
  5. Step 5: Solve for x
    x = 102,136,926.46/8,339.93
  6. Step 6: Final answer
    x = 12,246.73

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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.