Home / 1,812.10-2,716.78-933.66

Finding the Fourth Proportional to 1,812.10, 2,716.78 and 933.66

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Solution

The fourth proportional to 1,812.10, 2,716.78 and 933.66 is: 1,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.10 : 2,716.78 = 933.66 : x
  2. Step 2: Convert to fraction form
    1,812.10/2,716.78 = 933.66/x
  3. Step 3: Cross multiply
    1,812.10x = 2,716.78 × 933.66
  4. Step 4: Simplify right side
    1,812.10x = 2,536,535.23
  5. Step 5: Solve for x
    x = 2,536,535.23/1,812.10
  6. Step 6: Final answer
    x = 1,399.78

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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.