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Finding the Fourth Proportional to 2,643.12, 3,967.08 and 1,826.64

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Solution

The fourth proportional to 2,643.12, 3,967.08 and 1,826.64 is: 2,741.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.12 : 3,967.08 = 1,826.64 : x
  2. Step 2: Convert to fraction form
    2,643.12/3,967.08 = 1,826.64/x
  3. Step 3: Cross multiply
    2,643.12x = 3,967.08 × 1,826.64
  4. Step 4: Simplify right side
    2,643.12x = 7,246,427.01
  5. Step 5: Solve for x
    x = 7,246,427.01/2,643.12
  6. Step 6: Final answer
    x = 2,741.62

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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.