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Finding the Fourth Proportional to 8,744.55, 12,039.62 and 8,148.39

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Solution

The fourth proportional to 8,744.55, 12,039.62 and 8,148.39 is: 11,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,744.55 : 12,039.62 = 8,148.39 : x
  2. Step 2: Convert to fraction form
    8,744.55/12,039.62 = 8,148.39/x
  3. Step 3: Cross multiply
    8,744.55x = 12,039.62 × 8,148.39
  4. Step 4: Simplify right side
    8,744.55x = 98,103,478.47
  5. Step 5: Solve for x
    x = 98,103,478.47/8,744.55
  6. Step 6: Final answer
    x = 11,218.81

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1.5x scale

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.