Home / 10,122.12-15,174.81-3,878.64

Finding the Fourth Proportional to 10,122.12, 15,174.81 and 3,878.64

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Solution

The fourth proportional to 10,122.12, 15,174.81 and 3,878.64 is: 5,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.12 : 15,174.81 = 3,878.64 : x
  2. Step 2: Convert to fraction form
    10,122.12/15,174.81 = 3,878.64/x
  3. Step 3: Cross multiply
    10,122.12x = 15,174.81 × 3,878.64
  4. Step 4: Simplify right side
    10,122.12x = 58,857,625.06
  5. Step 5: Solve for x
    x = 58,857,625.06/10,122.12
  6. Step 6: Final answer
    x = 5,814.75

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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.