Home / 3,725.89-5,142.36-2,154.94

Finding the Fourth Proportional to 3,725.89, 5,142.36 and 2,154.94

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Solution

The fourth proportional to 3,725.89, 5,142.36 and 2,154.94 is: 2,974.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.89 : 5,142.36 = 2,154.94 : x
  2. Step 2: Convert to fraction form
    3,725.89/5,142.36 = 2,154.94/x
  3. Step 3: Cross multiply
    3,725.89x = 5,142.36 × 2,154.94
  4. Step 4: Simplify right side
    3,725.89x = 11,081,477.26
  5. Step 5: Solve for x
    x = 11,081,477.26/3,725.89
  6. Step 6: Final answer
    x = 2,974.18

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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.