Home / 2,688.14-4,033.35-1,390.52

Finding the Fourth Proportional to 2,688.14, 4,033.35 and 1,390.52

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Solution

The fourth proportional to 2,688.14, 4,033.35 and 1,390.52 is: 2,086.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.14 : 4,033.35 = 1,390.52 : x
  2. Step 2: Convert to fraction form
    2,688.14/4,033.35 = 1,390.52/x
  3. Step 3: Cross multiply
    2,688.14x = 4,033.35 × 1,390.52
  4. Step 4: Simplify right side
    2,688.14x = 5,608,433.68
  5. Step 5: Solve for x
    x = 5,608,433.68/2,688.14
  6. Step 6: Final answer
    x = 2,086.37

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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.