Home / 5,078.51-7,617.81-1,791.65

Finding the Fourth Proportional to 5,078.51, 7,617.81 and 1,791.65

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Solution

The fourth proportional to 5,078.51, 7,617.81 and 1,791.65 is: 2,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.51 : 7,617.81 = 1,791.65 : x
  2. Step 2: Convert to fraction form
    5,078.51/7,617.81 = 1,791.65/x
  3. Step 3: Cross multiply
    5,078.51x = 7,617.81 × 1,791.65
  4. Step 4: Simplify right side
    5,078.51x = 13,648,449.29
  5. Step 5: Solve for x
    x = 13,648,449.29/5,078.51
  6. Step 6: Final answer
    x = 2,687.49

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1.5x scale

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.