Home / 1,619.73-2,426.90-1,291.68

Finding the Fourth Proportional to 1,619.73, 2,426.90 and 1,291.68

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Solution

The fourth proportional to 1,619.73, 2,426.90 and 1,291.68 is: 1,935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.73 : 2,426.90 = 1,291.68 : x
  2. Step 2: Convert to fraction form
    1,619.73/2,426.90 = 1,291.68/x
  3. Step 3: Cross multiply
    1,619.73x = 2,426.90 × 1,291.68
  4. Step 4: Simplify right side
    1,619.73x = 3,134,771.73
  5. Step 5: Solve for x
    x = 3,134,771.73/1,619.73
  6. Step 6: Final answer
    x = 1,935.37

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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.