Home / 3,140.64-4,338-2,213.28

Finding the Fourth Proportional to 3,140.64, 4,338 and 2,213.28

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Solution

The fourth proportional to 3,140.64, 4,338 and 2,213.28 is: 3,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.64 : 4,338 = 2,213.28 : x
  2. Step 2: Convert to fraction form
    3,140.64/4,338 = 2,213.28/x
  3. Step 3: Cross multiply
    3,140.64x = 4,338 × 2,213.28
  4. Step 4: Simplify right side
    3,140.64x = 9,601,208.64
  5. Step 5: Solve for x
    x = 9,601,208.64/3,140.64
  6. Step 6: Final answer
    x = 3,057.09

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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.