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Finding the Fourth Proportional to 5,322.46, 7,984.10 and 1,426.36

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Solution

The fourth proportional to 5,322.46, 7,984.10 and 1,426.36 is: 2,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322.46 : 7,984.10 = 1,426.36 : x
  2. Step 2: Convert to fraction form
    5,322.46/7,984.10 = 1,426.36/x
  3. Step 3: Cross multiply
    5,322.46x = 7,984.10 × 1,426.36
  4. Step 4: Simplify right side
    5,322.46x = 11,388,200.88
  5. Step 5: Solve for x
    x = 11,388,200.88/5,322.46
  6. Step 6: Final answer
    x = 2,139.65

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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.