Home / 2,309.20-3,464.40-1,213.28

Finding the Fourth Proportional to 2,309.20, 3,464.40 and 1,213.28

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Solution

The fourth proportional to 2,309.20, 3,464.40 and 1,213.28 is: 1,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.20 : 3,464.40 = 1,213.28 : x
  2. Step 2: Convert to fraction form
    2,309.20/3,464.40 = 1,213.28/x
  3. Step 3: Cross multiply
    2,309.20x = 3,464.40 × 1,213.28
  4. Step 4: Simplify right side
    2,309.20x = 4,203,287.23
  5. Step 5: Solve for x
    x = 4,203,287.23/2,309.20
  6. Step 6: Final answer
    x = 1,820.24

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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.