Home / 7,899.78-11,855.79-2,973.90

Finding the Fourth Proportional to 7,899.78, 11,855.79 and 2,973.90

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Solution

The fourth proportional to 7,899.78, 11,855.79 and 2,973.90 is: 4,463.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.78 : 11,855.79 = 2,973.90 : x
  2. Step 2: Convert to fraction form
    7,899.78/11,855.79 = 2,973.90/x
  3. Step 3: Cross multiply
    7,899.78x = 11,855.79 × 2,973.90
  4. Step 4: Simplify right side
    7,899.78x = 35,257,933.88
  5. Step 5: Solve for x
    x = 35,257,933.88/7,899.78
  6. Step 6: Final answer
    x = 4,463.15

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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.