Home / 9,879.09-13,632.93-5,402.79

Finding the Fourth Proportional to 9,879.09, 13,632.93 and 5,402.79

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Solution

The fourth proportional to 9,879.09, 13,632.93 and 5,402.79 is: 7,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.09 : 13,632.93 = 5,402.79 : x
  2. Step 2: Convert to fraction form
    9,879.09/13,632.93 = 5,402.79/x
  3. Step 3: Cross multiply
    9,879.09x = 13,632.93 × 5,402.79
  4. Step 4: Simplify right side
    9,879.09x = 73,655,857.87
  5. Step 5: Solve for x
    x = 73,655,857.87/9,879.09
  6. Step 6: Final answer
    x = 7,455.73

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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.