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Finding the Fourth Proportional to 8,684.54, 13,019.07 and 3,136.67

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Solution

The fourth proportional to 8,684.54, 13,019.07 and 3,136.67 is: 4,702.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.54 : 13,019.07 = 3,136.67 : x
  2. Step 2: Convert to fraction form
    8,684.54/13,019.07 = 3,136.67/x
  3. Step 3: Cross multiply
    8,684.54x = 13,019.07 × 3,136.67
  4. Step 4: Simplify right side
    8,684.54x = 40,836,461.20
  5. Step 5: Solve for x
    x = 40,836,461.20/8,684.54
  6. Step 6: Final answer
    x = 4,702.20

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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.