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Finding the Fourth Proportional to 3,318.61, 4,973.81 and 1,675.63

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Solution

The fourth proportional to 3,318.61, 4,973.81 and 1,675.63 is: 2,511.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.61 : 4,973.81 = 1,675.63 : x
  2. Step 2: Convert to fraction form
    3,318.61/4,973.81 = 1,675.63/x
  3. Step 3: Cross multiply
    3,318.61x = 4,973.81 × 1,675.63
  4. Step 4: Simplify right side
    3,318.61x = 8,334,240.38
  5. Step 5: Solve for x
    x = 8,334,240.38/3,318.61
  6. Step 6: Final answer
    x = 2,511.36

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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.