Home / 2,386.87-3,581.01-1,290.94

Finding the Fourth Proportional to 2,386.87, 3,581.01 and 1,290.94

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Solution

The fourth proportional to 2,386.87, 3,581.01 and 1,290.94 is: 1,936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.87 : 3,581.01 = 1,290.94 : x
  2. Step 2: Convert to fraction form
    2,386.87/3,581.01 = 1,290.94/x
  3. Step 3: Cross multiply
    2,386.87x = 3,581.01 × 1,290.94
  4. Step 4: Simplify right side
    2,386.87x = 4,622,860.10
  5. Step 5: Solve for x
    x = 4,622,860.10/2,386.87
  6. Step 6: Final answer
    x = 1,936.79

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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.