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Finding the Fourth Proportional to 8,393.40, 12,580.92 and 3,460.50

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Solution

The fourth proportional to 8,393.40, 12,580.92 and 3,460.50 is: 5,186.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.40 : 12,580.92 = 3,460.50 : x
  2. Step 2: Convert to fraction form
    8,393.40/12,580.92 = 3,460.50/x
  3. Step 3: Cross multiply
    8,393.40x = 12,580.92 × 3,460.50
  4. Step 4: Simplify right side
    8,393.40x = 43,536,273.66
  5. Step 5: Solve for x
    x = 43,536,273.66/8,393.40
  6. Step 6: Final answer
    x = 5,186.97

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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.