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Finding the Fourth Proportional to 8,723.76, 12,039.12 and 4,998.48

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Solution

The fourth proportional to 8,723.76, 12,039.12 and 4,998.48 is: 6,898.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,723.76 : 12,039.12 = 4,998.48 : x
  2. Step 2: Convert to fraction form
    8,723.76/12,039.12 = 4,998.48/x
  3. Step 3: Cross multiply
    8,723.76x = 12,039.12 × 4,998.48
  4. Step 4: Simplify right side
    8,723.76x = 60,177,300.54
  5. Step 5: Solve for x
    x = 60,177,300.54/8,723.76
  6. Step 6: Final answer
    x = 6,898.09

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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.