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Finding the Fourth Proportional to 3,602.57, 5,405.22 and 1,412.82

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Solution

The fourth proportional to 3,602.57, 5,405.22 and 1,412.82 is: 2,119.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,602.57 : 5,405.22 = 1,412.82 : x
  2. Step 2: Convert to fraction form
    3,602.57/5,405.22 = 1,412.82/x
  3. Step 3: Cross multiply
    3,602.57x = 5,405.22 × 1,412.82
  4. Step 4: Simplify right side
    3,602.57x = 7,636,602.92
  5. Step 5: Solve for x
    x = 7,636,602.92/3,602.57
  6. Step 6: Final answer
    x = 2,119.77

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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.