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Finding the Fourth Proportional to 12,470, 18,705 and 3,236

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Solution

The fourth proportional to 12,470, 18,705 and 3,236 is: 4,854

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470 : 18,705 = 3,236 : x
  2. Step 2: Convert to fraction form
    12,470/18,705 = 3,236/x
  3. Step 3: Cross multiply
    12,470x = 18,705 × 3,236
  4. Step 4: Simplify right side
    12,470x = 60,529,380
  5. Step 5: Solve for x
    x = 60,529,380/12,470
  6. Step 6: Final answer
    x = 4,854

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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.