Home / 2,078.47-2,867.13-1,331.58

Finding the Fourth Proportional to 2,078.47, 2,867.13 and 1,331.58

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Solution

The fourth proportional to 2,078.47, 2,867.13 and 1,331.58 is: 1,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.47 : 2,867.13 = 1,331.58 : x
  2. Step 2: Convert to fraction form
    2,078.47/2,867.13 = 1,331.58/x
  3. Step 3: Cross multiply
    2,078.47x = 2,867.13 × 1,331.58
  4. Step 4: Simplify right side
    2,078.47x = 3,817,812.97
  5. Step 5: Solve for x
    x = 3,817,812.97/2,078.47
  6. Step 6: Final answer
    x = 1,836.84

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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.