Home / 6,431.49-8,879.81-4,042.44

Finding the Fourth Proportional to 6,431.49, 8,879.81 and 4,042.44

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Solution

The fourth proportional to 6,431.49, 8,879.81 and 4,042.44 is: 5,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.49 : 8,879.81 = 4,042.44 : x
  2. Step 2: Convert to fraction form
    6,431.49/8,879.81 = 4,042.44/x
  3. Step 3: Cross multiply
    6,431.49x = 8,879.81 × 4,042.44
  4. Step 4: Simplify right side
    6,431.49x = 35,896,078.92
  5. Step 5: Solve for x
    x = 35,896,078.92/6,431.49
  6. Step 6: Final answer
    x = 5,581.30

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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.