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Finding the Fourth Proportional to 8,641.49, 12,950.04 and 6,878.65

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Solution

The fourth proportional to 8,641.49, 12,950.04 and 6,878.65 is: 10,308.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.49 : 12,950.04 = 6,878.65 : x
  2. Step 2: Convert to fraction form
    8,641.49/12,950.04 = 6,878.65/x
  3. Step 3: Cross multiply
    8,641.49x = 12,950.04 × 6,878.65
  4. Step 4: Simplify right side
    8,641.49x = 89,078,760.27
  5. Step 5: Solve for x
    x = 89,078,760.27/8,641.49
  6. Step 6: Final answer
    x = 10,308.27

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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.