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Finding the Fourth Proportional to 8,508.65, 12,762.98 and 2,665.72

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Solution

The fourth proportional to 8,508.65, 12,762.98 and 2,665.72 is: 3,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.65 : 12,762.98 = 2,665.72 : x
  2. Step 2: Convert to fraction form
    8,508.65/12,762.98 = 2,665.72/x
  3. Step 3: Cross multiply
    8,508.65x = 12,762.98 × 2,665.72
  4. Step 4: Simplify right side
    8,508.65x = 34,022,531.05
  5. Step 5: Solve for x
    x = 34,022,531.05/8,508.65
  6. Step 6: Final answer
    x = 3,998.58

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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.