Home / 5,029.11-6,939.86-2,790.86

Finding the Fourth Proportional to 5,029.11, 6,939.86 and 2,790.86

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Solution

The fourth proportional to 5,029.11, 6,939.86 and 2,790.86 is: 3,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,029.11 : 6,939.86 = 2,790.86 : x
  2. Step 2: Convert to fraction form
    5,029.11/6,939.86 = 2,790.86/x
  3. Step 3: Cross multiply
    5,029.11x = 6,939.86 × 2,790.86
  4. Step 4: Simplify right side
    5,029.11x = 19,368,129.03
  5. Step 5: Solve for x
    x = 19,368,129.03/5,029.11
  6. Step 6: Final answer
    x = 3,851.20

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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.