Home / 1,722.81-2,371.30-1,439.85

Finding the Fourth Proportional to 1,722.81, 2,371.30 and 1,439.85

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Solution

The fourth proportional to 1,722.81, 2,371.30 and 1,439.85 is: 1,981.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.81 : 2,371.30 = 1,439.85 : x
  2. Step 2: Convert to fraction form
    1,722.81/2,371.30 = 1,439.85/x
  3. Step 3: Cross multiply
    1,722.81x = 2,371.30 × 1,439.85
  4. Step 4: Simplify right side
    1,722.81x = 3,414,316.31
  5. Step 5: Solve for x
    x = 3,414,316.31/1,722.81
  6. Step 6: Final answer
    x = 1,981.83

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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.