Home / 7,122.53-10,687.44-3,838.79

Finding the Fourth Proportional to 7,122.53, 10,687.44 and 3,838.79

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Solution

The fourth proportional to 7,122.53, 10,687.44 and 3,838.79 is: 5,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.53 : 10,687.44 = 3,838.79 : x
  2. Step 2: Convert to fraction form
    7,122.53/10,687.44 = 3,838.79/x
  3. Step 3: Cross multiply
    7,122.53x = 10,687.44 × 3,838.79
  4. Step 4: Simplify right side
    7,122.53x = 41,026,837.80
  5. Step 5: Solve for x
    x = 41,026,837.80/7,122.53
  6. Step 6: Final answer
    x = 5,760.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.