Home / 3,140.61-4,333.43-2,021.28

Finding the Fourth Proportional to 3,140.61, 4,333.43 and 2,021.28

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Solution

The fourth proportional to 3,140.61, 4,333.43 and 2,021.28 is: 2,788.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.61 : 4,333.43 = 2,021.28 : x
  2. Step 2: Convert to fraction form
    3,140.61/4,333.43 = 2,021.28/x
  3. Step 3: Cross multiply
    3,140.61x = 4,333.43 × 2,021.28
  4. Step 4: Simplify right side
    3,140.61x = 8,759,080.44
  5. Step 5: Solve for x
    x = 8,759,080.44/3,140.61
  6. Step 6: Final answer
    x = 2,788.97

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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.