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Finding the Fourth Proportional to 8,630.62, 11,909.88 and 4,853.86

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Solution

The fourth proportional to 8,630.62, 11,909.88 and 4,853.86 is: 6,698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.62 : 11,909.88 = 4,853.86 : x
  2. Step 2: Convert to fraction form
    8,630.62/11,909.88 = 4,853.86/x
  3. Step 3: Cross multiply
    8,630.62x = 11,909.88 × 4,853.86
  4. Step 4: Simplify right side
    8,630.62x = 57,808,890.14
  5. Step 5: Solve for x
    x = 57,808,890.14/8,630.62
  6. Step 6: Final answer
    x = 6,698.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.