Home / 2,815.18-4,220.22-1,333.47

Finding the Fourth Proportional to 2,815.18, 4,220.22 and 1,333.47

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Solution

The fourth proportional to 2,815.18, 4,220.22 and 1,333.47 is: 1,999.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.18 : 4,220.22 = 1,333.47 : x
  2. Step 2: Convert to fraction form
    2,815.18/4,220.22 = 1,333.47/x
  3. Step 3: Cross multiply
    2,815.18x = 4,220.22 × 1,333.47
  4. Step 4: Simplify right side
    2,815.18x = 5,627,539.68
  5. Step 5: Solve for x
    x = 5,627,539.68/2,815.18
  6. Step 6: Final answer
    x = 1,999.00

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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.