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Finding the Fourth Proportional to 3,487.80, 5,231.88 and 1,022.52

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Solution

The fourth proportional to 3,487.80, 5,231.88 and 1,022.52 is: 1,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.80 : 5,231.88 = 1,022.52 : x
  2. Step 2: Convert to fraction form
    3,487.80/5,231.88 = 1,022.52/x
  3. Step 3: Cross multiply
    3,487.80x = 5,231.88 × 1,022.52
  4. Step 4: Simplify right side
    3,487.80x = 5,349,701.94
  5. Step 5: Solve for x
    x = 5,349,701.94/3,487.80
  6. Step 6: Final answer
    x = 1,533.83

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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.