Home / 2,174.11-3,261.41-788.10

Finding the Fourth Proportional to 2,174.11, 3,261.41 and 788.10

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Solution

The fourth proportional to 2,174.11, 3,261.41 and 788.10 is: 1,182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.11 : 3,261.41 = 788.10 : x
  2. Step 2: Convert to fraction form
    2,174.11/3,261.41 = 788.10/x
  3. Step 3: Cross multiply
    2,174.11x = 3,261.41 × 788.10
  4. Step 4: Simplify right side
    2,174.11x = 2,570,317.22
  5. Step 5: Solve for x
    x = 2,570,317.22/2,174.11
  6. Step 6: Final answer
    x = 1,182.24

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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.