Home / 7,851.40-11,769.78-2,653.64

Finding the Fourth Proportional to 7,851.40, 11,769.78 and 2,653.64

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Solution

The fourth proportional to 7,851.40, 11,769.78 and 2,653.64 is: 3,977.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.40 : 11,769.78 = 2,653.64 : x
  2. Step 2: Convert to fraction form
    7,851.40/11,769.78 = 2,653.64/x
  3. Step 3: Cross multiply
    7,851.40x = 11,769.78 × 2,653.64
  4. Step 4: Simplify right side
    7,851.40x = 31,232,759.00
  5. Step 5: Solve for x
    x = 31,232,759.00/7,851.40
  6. Step 6: Final answer
    x = 3,977.99

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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.