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Finding the Fourth Proportional to 8,364.78, 12,623.08 and 8,085.94

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Solution

The fourth proportional to 8,364.78, 12,623.08 and 8,085.94 is: 12,202.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.78 : 12,623.08 = 8,085.94 : x
  2. Step 2: Convert to fraction form
    8,364.78/12,623.08 = 8,085.94/x
  3. Step 3: Cross multiply
    8,364.78x = 12,623.08 × 8,085.94
  4. Step 4: Simplify right side
    8,364.78x = 102,069,384.16
  5. Step 5: Solve for x
    x = 102,069,384.16/8,364.78
  6. Step 6: Final answer
    x = 12,202.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.