Home / 7,349.72-10,142.64-3,992.55

Finding the Fourth Proportional to 7,349.72, 10,142.64 and 3,992.55

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Solution

The fourth proportional to 7,349.72, 10,142.64 and 3,992.55 is: 5,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,349.72 : 10,142.64 = 3,992.55 : x
  2. Step 2: Convert to fraction form
    7,349.72/10,142.64 = 3,992.55/x
  3. Step 3: Cross multiply
    7,349.72x = 10,142.64 × 3,992.55
  4. Step 4: Simplify right side
    7,349.72x = 40,494,997.33
  5. Step 5: Solve for x
    x = 40,494,997.33/7,349.72
  6. Step 6: Final answer
    x = 5,509.74

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Half 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.