Home / 2,919.22-4,380.36-1,275.90

Finding the Fourth Proportional to 2,919.22, 4,380.36 and 1,275.90

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Solution

The fourth proportional to 2,919.22, 4,380.36 and 1,275.90 is: 1,914.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.22 : 4,380.36 = 1,275.90 : x
  2. Step 2: Convert to fraction form
    2,919.22/4,380.36 = 1,275.90/x
  3. Step 3: Cross multiply
    2,919.22x = 4,380.36 × 1,275.90
  4. Step 4: Simplify right side
    2,919.22x = 5,588,901.32
  5. Step 5: Solve for x
    x = 5,588,901.32/2,919.22
  6. Step 6: Final answer
    x = 1,914.52

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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.