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Finding the Fourth Proportional to 7,322.64, 10,987.56 and 2,943.24

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Solution

The fourth proportional to 7,322.64, 10,987.56 and 2,943.24 is: 4,416.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.64 : 10,987.56 = 2,943.24 : x
  2. Step 2: Convert to fraction form
    7,322.64/10,987.56 = 2,943.24/x
  3. Step 3: Cross multiply
    7,322.64x = 10,987.56 × 2,943.24
  4. Step 4: Simplify right side
    7,322.64x = 32,339,026.09
  5. Step 5: Solve for x
    x = 32,339,026.09/7,322.64
  6. Step 6: Final answer
    x = 4,416.31

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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.