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Finding the Fourth Proportional to 8,508.60, 12,762.92 and 2,585.54

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Solution

The fourth proportional to 8,508.60, 12,762.92 and 2,585.54 is: 3,878.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.60 : 12,762.92 = 2,585.54 : x
  2. Step 2: Convert to fraction form
    8,508.60/12,762.92 = 2,585.54/x
  3. Step 3: Cross multiply
    8,508.60x = 12,762.92 × 2,585.54
  4. Step 4: Simplify right side
    8,508.60x = 32,999,078.55
  5. Step 5: Solve for x
    x = 32,999,078.55/8,508.60
  6. Step 6: Final answer
    x = 3,878.32

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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.