Home / 2,725.13-3,759.71-1,781.47

Finding the Fourth Proportional to 2,725.13, 3,759.71 and 1,781.47

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Solution

The fourth proportional to 2,725.13, 3,759.71 and 1,781.47 is: 2,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.13 : 3,759.71 = 1,781.47 : x
  2. Step 2: Convert to fraction form
    2,725.13/3,759.71 = 1,781.47/x
  3. Step 3: Cross multiply
    2,725.13x = 3,759.71 × 1,781.47
  4. Step 4: Simplify right side
    2,725.13x = 6,697,791.78
  5. Step 5: Solve for x
    x = 6,697,791.78/2,725.13
  6. Step 6: Final answer
    x = 2,457.79

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1.5x scale

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.