Home / 3,728.66-5,144.96-2,156.45

Finding the Fourth Proportional to 3,728.66, 5,144.96 and 2,156.45

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Solution

The fourth proportional to 3,728.66, 5,144.96 and 2,156.45 is: 2,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.66 : 5,144.96 = 2,156.45 : x
  2. Step 2: Convert to fraction form
    3,728.66/5,144.96 = 2,156.45/x
  3. Step 3: Cross multiply
    3,728.66x = 5,144.96 × 2,156.45
  4. Step 4: Simplify right side
    3,728.66x = 11,094,812.48
  5. Step 5: Solve for x
    x = 11,094,812.48/3,728.66
  6. Step 6: Final answer
    x = 2,975.55

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Double scale
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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.