Home / 3,725.21-5,141.42-2,154.21

Finding the Fourth Proportional to 3,725.21, 5,141.42 and 2,154.21

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Solution

The fourth proportional to 3,725.21, 5,141.42 and 2,154.21 is: 2,973.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.21 : 5,141.42 = 2,154.21 : x
  2. Step 2: Convert to fraction form
    3,725.21/5,141.42 = 2,154.21/x
  3. Step 3: Cross multiply
    3,725.21x = 5,141.42 × 2,154.21
  4. Step 4: Simplify right side
    3,725.21x = 11,075,687.61
  5. Step 5: Solve for x
    x = 11,075,687.61/3,725.21
  6. Step 6: Final answer
    x = 2,973.18

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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.