Home / 5,086-7,018.40-2,990

Finding the Fourth Proportional to 5,086, 7,018.40 and 2,990

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Solution

The fourth proportional to 5,086, 7,018.40 and 2,990 is: 4,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086 : 7,018.40 = 2,990 : x
  2. Step 2: Convert to fraction form
    5,086/7,018.40 = 2,990/x
  3. Step 3: Cross multiply
    5,086x = 7,018.40 × 2,990
  4. Step 4: Simplify right side
    5,086x = 20,985,016
  5. Step 5: Solve for x
    x = 20,985,016/5,086
  6. Step 6: Final answer
    x = 4,126.04

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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.