Home / 2,146.11-3,218.52-913.50

Finding the Fourth Proportional to 2,146.11, 3,218.52 and 913.50

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Solution

The fourth proportional to 2,146.11, 3,218.52 and 913.50 is: 1,369.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.11 : 3,218.52 = 913.50 : x
  2. Step 2: Convert to fraction form
    2,146.11/3,218.52 = 913.50/x
  3. Step 3: Cross multiply
    2,146.11x = 3,218.52 × 913.50
  4. Step 4: Simplify right side
    2,146.11x = 2,940,118.02
  5. Step 5: Solve for x
    x = 2,940,118.02/2,146.11
  6. Step 6: Final answer
    x = 1,369.98

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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.