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Finding the Fourth Proportional to 7,858.45, 10,843.77 and 4,321.45

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Solution

The fourth proportional to 7,858.45, 10,843.77 and 4,321.45 is: 5,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.45 : 10,843.77 = 4,321.45 : x
  2. Step 2: Convert to fraction form
    7,858.45/10,843.77 = 4,321.45/x
  3. Step 3: Cross multiply
    7,858.45x = 10,843.77 × 4,321.45
  4. Step 4: Simplify right side
    7,858.45x = 46,860,809.87
  5. Step 5: Solve for x
    x = 46,860,809.87/7,858.45
  6. Step 6: Final answer
    x = 5,963.11

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1.5x scale

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.