Home / 2,685.14-4,028.85-1,387.52

Finding the Fourth Proportional to 2,685.14, 4,028.85 and 1,387.52

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Solution

The fourth proportional to 2,685.14, 4,028.85 and 1,387.52 is: 2,081.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.14 : 4,028.85 = 1,387.52 : x
  2. Step 2: Convert to fraction form
    2,685.14/4,028.85 = 1,387.52/x
  3. Step 3: Cross multiply
    2,685.14x = 4,028.85 × 1,387.52
  4. Step 4: Simplify right side
    2,685.14x = 5,590,089.81
  5. Step 5: Solve for x
    x = 5,590,089.81/2,685.14
  6. Step 6: Final answer
    x = 2,081.87

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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.