Home / 2,921.92-4,379.41-1,686.77

Finding the Fourth Proportional to 2,921.92, 4,379.41 and 1,686.77

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Solution

The fourth proportional to 2,921.92, 4,379.41 and 1,686.77 is: 2,528.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.92 : 4,379.41 = 1,686.77 : x
  2. Step 2: Convert to fraction form
    2,921.92/4,379.41 = 1,686.77/x
  3. Step 3: Cross multiply
    2,921.92x = 4,379.41 × 1,686.77
  4. Step 4: Simplify right side
    2,921.92x = 7,387,048.97
  5. Step 5: Solve for x
    x = 7,387,048.97/2,921.92
  6. Step 6: Final answer
    x = 2,528.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.