Home / 7,349.31-10,142.10-3,992.12

Finding the Fourth Proportional to 7,349.31, 10,142.10 and 3,992.12

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Solution

The fourth proportional to 7,349.31, 10,142.10 and 3,992.12 is: 5,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,349.31 : 10,142.10 = 3,992.12 : x
  2. Step 2: Convert to fraction form
    7,349.31/10,142.10 = 3,992.12/x
  3. Step 3: Cross multiply
    7,349.31x = 10,142.10 × 3,992.12
  4. Step 4: Simplify right side
    7,349.31x = 40,488,467.88
  5. Step 5: Solve for x
    x = 40,488,467.88/7,349.31
  6. Step 6: Final answer
    x = 5,509.16

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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.