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Finding the Fourth Proportional to 3,615.72, 4,986 and 2,950.44

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Solution

The fourth proportional to 3,615.72, 4,986 and 2,950.44 is: 4,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.72 : 4,986 = 2,950.44 : x
  2. Step 2: Convert to fraction form
    3,615.72/4,986 = 2,950.44/x
  3. Step 3: Cross multiply
    3,615.72x = 4,986 × 2,950.44
  4. Step 4: Simplify right side
    3,615.72x = 14,710,893.84
  5. Step 5: Solve for x
    x = 14,710,893.84/3,615.72
  6. Step 6: Final answer
    x = 4,068.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.