Home / 2,275.44-3,138.03-1,435.20

Finding the Fourth Proportional to 2,275.44, 3,138.03 and 1,435.20

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Solution

The fourth proportional to 2,275.44, 3,138.03 and 1,435.20 is: 1,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.44 : 3,138.03 = 1,435.20 : x
  2. Step 2: Convert to fraction form
    2,275.44/3,138.03 = 1,435.20/x
  3. Step 3: Cross multiply
    2,275.44x = 3,138.03 × 1,435.20
  4. Step 4: Simplify right side
    2,275.44x = 4,503,700.66
  5. Step 5: Solve for x
    x = 4,503,700.66/2,275.44
  6. Step 6: Final answer
    x = 1,979.27

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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.