Home / 3,315.11-4,992.40-2,887.43

Finding the Fourth Proportional to 3,315.11, 4,992.40 and 2,887.43

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Solution

The fourth proportional to 3,315.11, 4,992.40 and 2,887.43 is: 4,348.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.11 : 4,992.40 = 2,887.43 : x
  2. Step 2: Convert to fraction form
    3,315.11/4,992.40 = 2,887.43/x
  3. Step 3: Cross multiply
    3,315.11x = 4,992.40 × 2,887.43
  4. Step 4: Simplify right side
    3,315.11x = 14,415,205.53
  5. Step 5: Solve for x
    x = 14,415,205.53/3,315.11
  6. Step 6: Final answer
    x = 4,348.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.