Home / 1,461.11-2,015.40-983.37

Finding the Fourth Proportional to 1,461.11, 2,015.40 and 983.37

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Solution

The fourth proportional to 1,461.11, 2,015.40 and 983.37 is: 1,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.11 : 2,015.40 = 983.37 : x
  2. Step 2: Convert to fraction form
    1,461.11/2,015.40 = 983.37/x
  3. Step 3: Cross multiply
    1,461.11x = 2,015.40 × 983.37
  4. Step 4: Simplify right side
    1,461.11x = 1,981,883.90
  5. Step 5: Solve for x
    x = 1,981,883.90/1,461.11
  6. Step 6: Final answer
    x = 1,356.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.