Home / 5,131.08-7,080.90-2,892.98

Finding the Fourth Proportional to 5,131.08, 7,080.90 and 2,892.98

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Solution

The fourth proportional to 5,131.08, 7,080.90 and 2,892.98 is: 3,992.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.08 : 7,080.90 = 2,892.98 : x
  2. Step 2: Convert to fraction form
    5,131.08/7,080.90 = 2,892.98/x
  3. Step 3: Cross multiply
    5,131.08x = 7,080.90 × 2,892.98
  4. Step 4: Simplify right side
    5,131.08x = 20,484,866.68
  5. Step 5: Solve for x
    x = 20,484,866.68/5,131.08
  6. Step 6: Final answer
    x = 3,992.31

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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.