Home / 2,249.12-3,374.64-789.32

Finding the Fourth Proportional to 2,249.12, 3,374.64 and 789.32

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Solution

The fourth proportional to 2,249.12, 3,374.64 and 789.32 is: 1,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,249.12 : 3,374.64 = 789.32 : x
  2. Step 2: Convert to fraction form
    2,249.12/3,374.64 = 789.32/x
  3. Step 3: Cross multiply
    2,249.12x = 3,374.64 × 789.32
  4. Step 4: Simplify right side
    2,249.12x = 2,663,670.84
  5. Step 5: Solve for x
    x = 2,663,670.84/2,249.12
  6. Step 6: Final answer
    x = 1,184.32

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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.