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Finding the Fourth Proportional to 8,613.90, 12,926.03 and 3,683.55

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Solution

The fourth proportional to 8,613.90, 12,926.03 and 3,683.55 is: 5,527.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.90 : 12,926.03 = 3,683.55 : x
  2. Step 2: Convert to fraction form
    8,613.90/12,926.03 = 3,683.55/x
  3. Step 3: Cross multiply
    8,613.90x = 12,926.03 × 3,683.55
  4. Step 4: Simplify right side
    8,613.90x = 47,613,677.81
  5. Step 5: Solve for x
    x = 47,613,677.81/8,613.90
  6. Step 6: Final answer
    x = 5,527.54

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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.