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Finding the Fourth Proportional to 7,918.54, 11,877.81 and 6,435.97

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Solution

The fourth proportional to 7,918.54, 11,877.81 and 6,435.97 is: 9,653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.54 : 11,877.81 = 6,435.97 : x
  2. Step 2: Convert to fraction form
    7,918.54/11,877.81 = 6,435.97/x
  3. Step 3: Cross multiply
    7,918.54x = 11,877.81 × 6,435.97
  4. Step 4: Simplify right side
    7,918.54x = 76,445,175.00
  5. Step 5: Solve for x
    x = 76,445,175.00/7,918.54
  6. Step 6: Final answer
    x = 9,653.95

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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.