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Finding the Fourth Proportional to 7,858.89, 11,779.83 and 3,963.60

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Solution

The fourth proportional to 7,858.89, 11,779.83 and 3,963.60 is: 5,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.89 : 11,779.83 = 3,963.60 : x
  2. Step 2: Convert to fraction form
    7,858.89/11,779.83 = 3,963.60/x
  3. Step 3: Cross multiply
    7,858.89x = 11,779.83 × 3,963.60
  4. Step 4: Simplify right side
    7,858.89x = 46,690,534.19
  5. Step 5: Solve for x
    x = 46,690,534.19/7,858.89
  6. Step 6: Final answer
    x = 5,941.11

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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.