Home / 1,919.05-2,648.18-1,079.79

Finding the Fourth Proportional to 1,919.05, 2,648.18 and 1,079.79

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Solution

The fourth proportional to 1,919.05, 2,648.18 and 1,079.79 is: 1,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.05 : 2,648.18 = 1,079.79 : x
  2. Step 2: Convert to fraction form
    1,919.05/2,648.18 = 1,079.79/x
  3. Step 3: Cross multiply
    1,919.05x = 2,648.18 × 1,079.79
  4. Step 4: Simplify right side
    1,919.05x = 2,859,480.98
  5. Step 5: Solve for x
    x = 2,859,480.98/1,919.05
  6. Step 6: Final answer
    x = 1,490.05

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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.