Home / 2,411.86-3,323.92-1,989.65

Finding the Fourth Proportional to 2,411.86, 3,323.92 and 1,989.65

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Solution

The fourth proportional to 2,411.86, 3,323.92 and 1,989.65 is: 2,742.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,411.86 : 3,323.92 = 1,989.65 : x
  2. Step 2: Convert to fraction form
    2,411.86/3,323.92 = 1,989.65/x
  3. Step 3: Cross multiply
    2,411.86x = 3,323.92 × 1,989.65
  4. Step 4: Simplify right side
    2,411.86x = 6,613,425.78
  5. Step 5: Solve for x
    x = 6,613,425.78/2,411.86
  6. Step 6: Final answer
    x = 2,742.05

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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.