Home / 9,879.42-13,633.68-5,403.08

Finding the Fourth Proportional to 9,879.42, 13,633.68 and 5,403.08

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Solution

The fourth proportional to 9,879.42, 13,633.68 and 5,403.08 is: 7,456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.42 : 13,633.68 = 5,403.08 : x
  2. Step 2: Convert to fraction form
    9,879.42/13,633.68 = 5,403.08/x
  3. Step 3: Cross multiply
    9,879.42x = 13,633.68 × 5,403.08
  4. Step 4: Simplify right side
    9,879.42x = 73,663,863.73
  5. Step 5: Solve for x
    x = 73,663,863.73/9,879.42
  6. Step 6: Final answer
    x = 7,456.29

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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.