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Finding the Fourth Proportional to 2,991.48, 4,473.96 and 2,664.84

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Solution

The fourth proportional to 2,991.48, 4,473.96 and 2,664.84 is: 3,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.48 : 4,473.96 = 2,664.84 : x
  2. Step 2: Convert to fraction form
    2,991.48/4,473.96 = 2,664.84/x
  3. Step 3: Cross multiply
    2,991.48x = 4,473.96 × 2,664.84
  4. Step 4: Simplify right side
    2,991.48x = 11,922,387.57
  5. Step 5: Solve for x
    x = 11,922,387.57/2,991.48
  6. Step 6: Final answer
    x = 3,985.45

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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.