Home / 1,765.21-2,435.49-1,391.03

Finding the Fourth Proportional to 1,765.21, 2,435.49 and 1,391.03

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Solution

The fourth proportional to 1,765.21, 2,435.49 and 1,391.03 is: 1,919.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765.21 : 2,435.49 = 1,391.03 : x
  2. Step 2: Convert to fraction form
    1,765.21/2,435.49 = 1,391.03/x
  3. Step 3: Cross multiply
    1,765.21x = 2,435.49 × 1,391.03
  4. Step 4: Simplify right side
    1,765.21x = 3,387,839.65
  5. Step 5: Solve for x
    x = 3,387,839.65/1,765.21
  6. Step 6: Final answer
    x = 1,919.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.