Home / 5,110.68-7,664.40-1,821.90

Finding the Fourth Proportional to 5,110.68, 7,664.40 and 1,821.90

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Solution

The fourth proportional to 5,110.68, 7,664.40 and 1,821.90 is: 2,732.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.68 : 7,664.40 = 1,821.90 : x
  2. Step 2: Convert to fraction form
    5,110.68/7,664.40 = 1,821.90/x
  3. Step 3: Cross multiply
    5,110.68x = 7,664.40 × 1,821.90
  4. Step 4: Simplify right side
    5,110.68x = 13,963,770.36
  5. Step 5: Solve for x
    x = 13,963,770.36/5,110.68
  6. Step 6: Final answer
    x = 2,732.27

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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.