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Finding the Fourth Proportional to 8,641.65, 12,950.42 and 6,531.54

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Solution

The fourth proportional to 8,641.65, 12,950.42 and 6,531.54 is: 9,788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.65 : 12,950.42 = 6,531.54 : x
  2. Step 2: Convert to fraction form
    8,641.65/12,950.42 = 6,531.54/x
  3. Step 3: Cross multiply
    8,641.65x = 12,950.42 × 6,531.54
  4. Step 4: Simplify right side
    8,641.65x = 84,586,269.40
  5. Step 5: Solve for x
    x = 84,586,269.40/8,641.65
  6. Step 6: Final answer
    x = 9,788.20

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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.