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Finding the Fourth Proportional to 6,579.12, 9,870.24 and 1,962

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Solution

The fourth proportional to 6,579.12, 9,870.24 and 1,962 is: 2,943.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,579.12 : 9,870.24 = 1,962 : x
  2. Step 2: Convert to fraction form
    6,579.12/9,870.24 = 1,962/x
  3. Step 3: Cross multiply
    6,579.12x = 9,870.24 × 1,962
  4. Step 4: Simplify right side
    6,579.12x = 19,365,410.88
  5. Step 5: Solve for x
    x = 19,365,410.88/6,579.12
  6. Step 6: Final answer
    x = 2,943.47

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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.