Home / 2,161.89-2,983.22-1,265.74

Finding the Fourth Proportional to 2,161.89, 2,983.22 and 1,265.74

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Solution

The fourth proportional to 2,161.89, 2,983.22 and 1,265.74 is: 1,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.89 : 2,983.22 = 1,265.74 : x
  2. Step 2: Convert to fraction form
    2,161.89/2,983.22 = 1,265.74/x
  3. Step 3: Cross multiply
    2,161.89x = 2,983.22 × 1,265.74
  4. Step 4: Simplify right side
    2,161.89x = 3,775,967.10
  5. Step 5: Solve for x
    x = 3,775,967.10/2,161.89
  6. Step 6: Final answer
    x = 1,746.60

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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.