Home / 3,738.12-5,156.04-2,166.24

Finding the Fourth Proportional to 3,738.12, 5,156.04 and 2,166.24

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Solution

The fourth proportional to 3,738.12, 5,156.04 and 2,166.24 is: 2,987.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.12 : 5,156.04 = 2,166.24 : x
  2. Step 2: Convert to fraction form
    3,738.12/5,156.04 = 2,166.24/x
  3. Step 3: Cross multiply
    3,738.12x = 5,156.04 × 2,166.24
  4. Step 4: Simplify right side
    3,738.12x = 11,169,220.09
  5. Step 5: Solve for x
    x = 11,169,220.09/3,738.12
  6. Step 6: Final answer
    x = 2,987.92

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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.