Home / 2,919.24-4,029.45-1,871.28

Finding the Fourth Proportional to 2,919.24, 4,029.45 and 1,871.28

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Solution

The fourth proportional to 2,919.24, 4,029.45 and 1,871.28 is: 2,582.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.24 : 4,029.45 = 1,871.28 : x
  2. Step 2: Convert to fraction form
    2,919.24/4,029.45 = 1,871.28/x
  3. Step 3: Cross multiply
    2,919.24x = 4,029.45 × 1,871.28
  4. Step 4: Simplify right side
    2,919.24x = 7,540,229.20
  5. Step 5: Solve for x
    x = 7,540,229.20/2,919.24
  6. Step 6: Final answer
    x = 2,582.94

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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.