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Finding the Fourth Proportional to 6,579.90, 9,871.23 and 1,899.90

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Solution

The fourth proportional to 6,579.90, 9,871.23 and 1,899.90 is: 2,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,579.90 : 9,871.23 = 1,899.90 : x
  2. Step 2: Convert to fraction form
    6,579.90/9,871.23 = 1,899.90/x
  3. Step 3: Cross multiply
    6,579.90x = 9,871.23 × 1,899.90
  4. Step 4: Simplify right side
    6,579.90x = 18,754,349.88
  5. Step 5: Solve for x
    x = 18,754,349.88/6,579.90
  6. Step 6: Final answer
    x = 2,850.25

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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.