Home / 2,167.11-3,249.29-917.05

Finding the Fourth Proportional to 2,167.11, 3,249.29 and 917.05

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Solution

The fourth proportional to 2,167.11, 3,249.29 and 917.05 is: 1,374.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.11 : 3,249.29 = 917.05 : x
  2. Step 2: Convert to fraction form
    2,167.11/3,249.29 = 917.05/x
  3. Step 3: Cross multiply
    2,167.11x = 3,249.29 × 917.05
  4. Step 4: Simplify right side
    2,167.11x = 2,979,761.39
  5. Step 5: Solve for x
    x = 2,979,761.39/2,167.11
  6. Step 6: Final answer
    x = 1,374.99

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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.