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Finding the Fourth Proportional to 8,980.74, 12,393.39 and 5,001.90

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Solution

The fourth proportional to 8,980.74, 12,393.39 and 5,001.90 is: 6,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.74 : 12,393.39 = 5,001.90 : x
  2. Step 2: Convert to fraction form
    8,980.74/12,393.39 = 5,001.90/x
  3. Step 3: Cross multiply
    8,980.74x = 12,393.39 × 5,001.90
  4. Step 4: Simplify right side
    8,980.74x = 61,990,497.44
  5. Step 5: Solve for x
    x = 61,990,497.44/8,980.74
  6. Step 6: Final answer
    x = 6,902.60

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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.