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Finding the Fourth Proportional to 8,379.41, 12,576.40 and 5,460.98

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Solution

The fourth proportional to 8,379.41, 12,576.40 and 5,460.98 is: 8,196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.41 : 12,576.40 = 5,460.98 : x
  2. Step 2: Convert to fraction form
    8,379.41/12,576.40 = 5,460.98/x
  3. Step 3: Cross multiply
    8,379.41x = 12,576.40 × 5,460.98
  4. Step 4: Simplify right side
    8,379.41x = 68,679,392.34
  5. Step 5: Solve for x
    x = 68,679,392.34/8,379.41
  6. Step 6: Final answer
    x = 8,196.21

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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.