Home / 2,642.97-3,671.77-2,618.89

Finding the Fourth Proportional to 2,642.97, 3,671.77 and 2,618.89

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Solution

The fourth proportional to 2,642.97, 3,671.77 and 2,618.89 is: 3,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.97 : 3,671.77 = 2,618.89 : x
  2. Step 2: Convert to fraction form
    2,642.97/3,671.77 = 2,618.89/x
  3. Step 3: Cross multiply
    2,642.97x = 3,671.77 × 2,618.89
  4. Step 4: Simplify right side
    2,642.97x = 9,615,973.05
  5. Step 5: Solve for x
    x = 9,615,973.05/2,642.97
  6. Step 6: Final answer
    x = 3,638.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.