Home / 3,129.95-4,320.06-2,067.91

Finding the Fourth Proportional to 3,129.95, 4,320.06 and 2,067.91

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Solution

The fourth proportional to 3,129.95, 4,320.06 and 2,067.91 is: 2,854.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.95 : 4,320.06 = 2,067.91 : x
  2. Step 2: Convert to fraction form
    3,129.95/4,320.06 = 2,067.91/x
  3. Step 3: Cross multiply
    3,129.95x = 4,320.06 × 2,067.91
  4. Step 4: Simplify right side
    3,129.95x = 8,933,495.27
  5. Step 5: Solve for x
    x = 8,933,495.27/3,129.95
  6. Step 6: Final answer
    x = 2,854.20

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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.