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Finding the Fourth Proportional to 8,683.40, 13,025.10 and 3,136.93

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Solution

The fourth proportional to 8,683.40, 13,025.10 and 3,136.93 is: 4,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,683.40 : 13,025.10 = 3,136.93 : x
  2. Step 2: Convert to fraction form
    8,683.40/13,025.10 = 3,136.93/x
  3. Step 3: Cross multiply
    8,683.40x = 13,025.10 × 3,136.93
  4. Step 4: Simplify right side
    8,683.40x = 40,858,826.94
  5. Step 5: Solve for x
    x = 40,858,826.94/8,683.40
  6. Step 6: Final answer
    x = 4,705.40

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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.