Home / 2,146.73-3,218.70-913.80

Finding the Fourth Proportional to 2,146.73, 3,218.70 and 913.80

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Solution

The fourth proportional to 2,146.73, 3,218.70 and 913.80 is: 1,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.73 : 3,218.70 = 913.80 : x
  2. Step 2: Convert to fraction form
    2,146.73/3,218.70 = 913.80/x
  3. Step 3: Cross multiply
    2,146.73x = 3,218.70 × 913.80
  4. Step 4: Simplify right side
    2,146.73x = 2,941,248.06
  5. Step 5: Solve for x
    x = 2,941,248.06/2,146.73
  6. Step 6: Final answer
    x = 1,370.11

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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.