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Finding the Fourth Proportional to 7,911.54, 11,867.91 and 2,068.06

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Solution

The fourth proportional to 7,911.54, 11,867.91 and 2,068.06 is: 3,102.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.54 : 11,867.91 = 2,068.06 : x
  2. Step 2: Convert to fraction form
    7,911.54/11,867.91 = 2,068.06/x
  3. Step 3: Cross multiply
    7,911.54x = 11,867.91 × 2,068.06
  4. Step 4: Simplify right side
    7,911.54x = 24,543,549.95
  5. Step 5: Solve for x
    x = 24,543,549.95/7,911.54
  6. Step 6: Final answer
    x = 3,102.25

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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.