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Finding the Fourth Proportional to 8,630.67, 12,946.05 and 2,390.70

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Solution

The fourth proportional to 8,630.67, 12,946.05 and 2,390.70 is: 3,586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.67 : 12,946.05 = 2,390.70 : x
  2. Step 2: Convert to fraction form
    8,630.67/12,946.05 = 2,390.70/x
  3. Step 3: Cross multiply
    8,630.67x = 12,946.05 × 2,390.70
  4. Step 4: Simplify right side
    8,630.67x = 30,950,121.74
  5. Step 5: Solve for x
    x = 30,950,121.74/8,630.67
  6. Step 6: Final answer
    x = 3,586.06

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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.