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Finding the Fourth Proportional to 8,343.68, 12,508.24 and 7,879.56

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Solution

The fourth proportional to 8,343.68, 12,508.24 and 7,879.56 is: 11,812.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,343.68 : 12,508.24 = 7,879.56 : x
  2. Step 2: Convert to fraction form
    8,343.68/12,508.24 = 7,879.56/x
  3. Step 3: Cross multiply
    8,343.68x = 12,508.24 × 7,879.56
  4. Step 4: Simplify right side
    8,343.68x = 98,559,427.57
  5. Step 5: Solve for x
    x = 98,559,427.57/8,343.68
  6. Step 6: Final answer
    x = 11,812.46

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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.