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Finding the Fourth Proportional to 8,360.41, 12,543.18 and 3,430.42

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Solution

The fourth proportional to 8,360.41, 12,543.18 and 3,430.42 is: 5,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,360.41 : 12,543.18 = 3,430.42 : x
  2. Step 2: Convert to fraction form
    8,360.41/12,543.18 = 3,430.42/x
  3. Step 3: Cross multiply
    8,360.41x = 12,543.18 × 3,430.42
  4. Step 4: Simplify right side
    8,360.41x = 43,028,375.54
  5. Step 5: Solve for x
    x = 43,028,375.54/8,360.41
  6. Step 6: Final answer
    x = 5,146.68

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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.