Home / 2,078.41-3,109.79-1,154.63

Finding the Fourth Proportional to 2,078.41, 3,109.79 and 1,154.63

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Solution

The fourth proportional to 2,078.41, 3,109.79 and 1,154.63 is: 1,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.41 : 3,109.79 = 1,154.63 : x
  2. Step 2: Convert to fraction form
    2,078.41/3,109.79 = 1,154.63/x
  3. Step 3: Cross multiply
    2,078.41x = 3,109.79 × 1,154.63
  4. Step 4: Simplify right side
    2,078.41x = 3,590,658.74
  5. Step 5: Solve for x
    x = 3,590,658.74/2,078.41
  6. Step 6: Final answer
    x = 1,727.60

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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.