Home / 1,392.06-1,919.48-950.20

Finding the Fourth Proportional to 1,392.06, 1,919.48 and 950.20

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Solution

The fourth proportional to 1,392.06, 1,919.48 and 950.20 is: 1,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.06 : 1,919.48 = 950.20 : x
  2. Step 2: Convert to fraction form
    1,392.06/1,919.48 = 950.20/x
  3. Step 3: Cross multiply
    1,392.06x = 1,919.48 × 950.20
  4. Step 4: Simplify right side
    1,392.06x = 1,823,889.90
  5. Step 5: Solve for x
    x = 1,823,889.90/1,392.06
  6. Step 6: Final answer
    x = 1,310.21

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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.