Home / 3,721.89-5,136.84-2,150.90

Finding the Fourth Proportional to 3,721.89, 5,136.84 and 2,150.90

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Solution

The fourth proportional to 3,721.89, 5,136.84 and 2,150.90 is: 2,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.89 : 5,136.84 = 2,150.90 : x
  2. Step 2: Convert to fraction form
    3,721.89/5,136.84 = 2,150.90/x
  3. Step 3: Cross multiply
    3,721.89x = 5,136.84 × 2,150.90
  4. Step 4: Simplify right side
    3,721.89x = 11,048,803.47
  5. Step 5: Solve for x
    x = 11,048,803.47/3,721.89
  6. Step 6: Final answer
    x = 2,968.60

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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.