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Finding the Fourth Proportional to 8,508.58, 12,764.91 and 4,120.91

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Solution

The fourth proportional to 8,508.58, 12,764.91 and 4,120.91 is: 6,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.58 : 12,764.91 = 4,120.91 : x
  2. Step 2: Convert to fraction form
    8,508.58/12,764.91 = 4,120.91/x
  3. Step 3: Cross multiply
    8,508.58x = 12,764.91 × 4,120.91
  4. Step 4: Simplify right side
    8,508.58x = 52,603,045.27
  5. Step 5: Solve for x
    x = 52,603,045.27/8,508.58
  6. Step 6: Final answer
    x = 6,182.35

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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.