Home / 1,919.24-2,648.30-1,079.84

Finding the Fourth Proportional to 1,919.24, 2,648.30 and 1,079.84

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Solution

The fourth proportional to 1,919.24, 2,648.30 and 1,079.84 is: 1,490.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.24 : 2,648.30 = 1,079.84 : x
  2. Step 2: Convert to fraction form
    1,919.24/2,648.30 = 1,079.84/x
  3. Step 3: Cross multiply
    1,919.24x = 2,648.30 × 1,079.84
  4. Step 4: Simplify right side
    1,919.24x = 2,859,721.63
  5. Step 5: Solve for x
    x = 2,859,721.63/1,919.24
  6. Step 6: Final answer
    x = 1,490.03

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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.