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Finding the Fourth Proportional to 8,512, 11,746.68 and 5,200

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Solution

The fourth proportional to 8,512, 11,746.68 and 5,200 is: 7,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512 : 11,746.68 = 5,200 : x
  2. Step 2: Convert to fraction form
    8,512/11,746.68 = 5,200/x
  3. Step 3: Cross multiply
    8,512x = 11,746.68 × 5,200
  4. Step 4: Simplify right side
    8,512x = 61,082,736
  5. Step 5: Solve for x
    x = 61,082,736/8,512
  6. Step 6: Final answer
    x = 7,176.07

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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.