Home / 1,518.56-2,276.40-1,378.88

Finding the Fourth Proportional to 1,518.56, 2,276.40 and 1,378.88

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Solution

The fourth proportional to 1,518.56, 2,276.40 and 1,378.88 is: 2,067.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.56 : 2,276.40 = 1,378.88 : x
  2. Step 2: Convert to fraction form
    1,518.56/2,276.40 = 1,378.88/x
  3. Step 3: Cross multiply
    1,518.56x = 2,276.40 × 1,378.88
  4. Step 4: Simplify right side
    1,518.56x = 3,138,882.43
  5. Step 5: Solve for x
    x = 3,138,882.43/1,518.56
  6. Step 6: Final answer
    x = 2,067.01

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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.