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Finding the Fourth Proportional to 8,636.53, 12,954.05 and 5,258.44

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Solution

The fourth proportional to 8,636.53, 12,954.05 and 5,258.44 is: 7,887.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.53 : 12,954.05 = 5,258.44 : x
  2. Step 2: Convert to fraction form
    8,636.53/12,954.05 = 5,258.44/x
  3. Step 3: Cross multiply
    8,636.53x = 12,954.05 × 5,258.44
  4. Step 4: Simplify right side
    8,636.53x = 68,118,133.34
  5. Step 5: Solve for x
    x = 68,118,133.34/8,636.53
  6. Step 6: Final answer
    x = 7,887.21

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1.5x scale

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.