Home / 1,911.34-2,862.73-1,661.34

Finding the Fourth Proportional to 1,911.34, 2,862.73 and 1,661.34

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Solution

The fourth proportional to 1,911.34, 2,862.73 and 1,661.34 is: 2,488.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.34 : 2,862.73 = 1,661.34 : x
  2. Step 2: Convert to fraction form
    1,911.34/2,862.73 = 1,661.34/x
  3. Step 3: Cross multiply
    1,911.34x = 2,862.73 × 1,661.34
  4. Step 4: Simplify right side
    1,911.34x = 4,755,967.86
  5. Step 5: Solve for x
    x = 4,755,967.86/1,911.34
  6. Step 6: Final answer
    x = 2,488.29

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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.