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Finding the Fourth Proportional to 5,713.79, 7,879.89 and 3,589.52

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Solution

The fourth proportional to 5,713.79, 7,879.89 and 3,589.52 is: 4,950.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,713.79 : 7,879.89 = 3,589.52 : x
  2. Step 2: Convert to fraction form
    5,713.79/7,879.89 = 3,589.52/x
  3. Step 3: Cross multiply
    5,713.79x = 7,879.89 × 3,589.52
  4. Step 4: Simplify right side
    5,713.79x = 28,284,983.35
  5. Step 5: Solve for x
    x = 28,284,983.35/5,713.79
  6. Step 6: Final answer
    x = 4,950.31

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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.