Home / 1,820.22-2,509.97-1,191.29

Finding the Fourth Proportional to 1,820.22, 2,509.97 and 1,191.29

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Solution

The fourth proportional to 1,820.22, 2,509.97 and 1,191.29 is: 1,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.22 : 2,509.97 = 1,191.29 : x
  2. Step 2: Convert to fraction form
    1,820.22/2,509.97 = 1,191.29/x
  3. Step 3: Cross multiply
    1,820.22x = 2,509.97 × 1,191.29
  4. Step 4: Simplify right side
    1,820.22x = 2,990,083.66
  5. Step 5: Solve for x
    x = 2,990,083.66/1,820.22
  6. Step 6: Final answer
    x = 1,642.70

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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.