Home / 1,812.26-2,711.70-1,119.30

Finding the Fourth Proportional to 1,812.26, 2,711.70 and 1,119.30

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Solution

The fourth proportional to 1,812.26, 2,711.70 and 1,119.30 is: 1,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.26 : 2,711.70 = 1,119.30 : x
  2. Step 2: Convert to fraction form
    1,812.26/2,711.70 = 1,119.30/x
  3. Step 3: Cross multiply
    1,812.26x = 2,711.70 × 1,119.30
  4. Step 4: Simplify right side
    1,812.26x = 3,035,205.81
  5. Step 5: Solve for x
    x = 3,035,205.81/1,812.26
  6. Step 6: Final answer
    x = 1,674.82

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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.