Home / 5,078.21-7,617.55-1,791.34

Finding the Fourth Proportional to 5,078.21, 7,617.55 and 1,791.34

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Solution

The fourth proportional to 5,078.21, 7,617.55 and 1,791.34 is: 2,687.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.21 : 7,617.55 = 1,791.34 : x
  2. Step 2: Convert to fraction form
    5,078.21/7,617.55 = 1,791.34/x
  3. Step 3: Cross multiply
    5,078.21x = 7,617.55 × 1,791.34
  4. Step 4: Simplify right side
    5,078.21x = 13,645,598.49
  5. Step 5: Solve for x
    x = 13,645,598.49/5,078.21
  6. Step 6: Final answer
    x = 2,687.09

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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.