Home / 1,782.91-2,671.89-1,391.14

Finding the Fourth Proportional to 1,782.91, 2,671.89 and 1,391.14

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Solution

The fourth proportional to 1,782.91, 2,671.89 and 1,391.14 is: 2,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,782.91 : 2,671.89 = 1,391.14 : x
  2. Step 2: Convert to fraction form
    1,782.91/2,671.89 = 1,391.14/x
  3. Step 3: Cross multiply
    1,782.91x = 2,671.89 × 1,391.14
  4. Step 4: Simplify right side
    1,782.91x = 3,716,971.18
  5. Step 5: Solve for x
    x = 3,716,971.18/1,782.91
  6. Step 6: Final answer
    x = 2,084.78

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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.