Home / 2,052.51-3,078.75-1,392.75

Finding the Fourth Proportional to 2,052.51, 3,078.75 and 1,392.75

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Solution

The fourth proportional to 2,052.51, 3,078.75 and 1,392.75 is: 2,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.51 : 3,078.75 = 1,392.75 : x
  2. Step 2: Convert to fraction form
    2,052.51/3,078.75 = 1,392.75/x
  3. Step 3: Cross multiply
    2,052.51x = 3,078.75 × 1,392.75
  4. Step 4: Simplify right side
    2,052.51x = 4,287,935.38
  5. Step 5: Solve for x
    x = 4,287,935.38/2,052.51
  6. Step 6: Final answer
    x = 2,089.12

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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.