Home / 3,728.84-5,145.53-2,156.63

Finding the Fourth Proportional to 3,728.84, 5,145.53 and 2,156.63

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Solution

The fourth proportional to 3,728.84, 5,145.53 and 2,156.63 is: 2,975.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.84 : 5,145.53 = 2,156.63 : x
  2. Step 2: Convert to fraction form
    3,728.84/5,145.53 = 2,156.63/x
  3. Step 3: Cross multiply
    3,728.84x = 5,145.53 × 2,156.63
  4. Step 4: Simplify right side
    3,728.84x = 11,096,967.85
  5. Step 5: Solve for x
    x = 11,096,967.85/3,728.84
  6. Step 6: Final answer
    x = 2,975.99

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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.