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Finding the Fourth Proportional to 3,699.84, 5,545.05 and 1,619.30

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Solution

The fourth proportional to 3,699.84, 5,545.05 and 1,619.30 is: 2,426.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.84 : 5,545.05 = 1,619.30 : x
  2. Step 2: Convert to fraction form
    3,699.84/5,545.05 = 1,619.30/x
  3. Step 3: Cross multiply
    3,699.84x = 5,545.05 × 1,619.30
  4. Step 4: Simplify right side
    3,699.84x = 8,979,071.74
  5. Step 5: Solve for x
    x = 8,979,071.74/3,699.84
  6. Step 6: Final answer
    x = 2,426.88

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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.