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Finding the Fourth Proportional to 4,718.99, 6,520.41 and 3,879.05

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Solution

The fourth proportional to 4,718.99, 6,520.41 and 3,879.05 is: 5,359.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.99 : 6,520.41 = 3,879.05 : x
  2. Step 2: Convert to fraction form
    4,718.99/6,520.41 = 3,879.05/x
  3. Step 3: Cross multiply
    4,718.99x = 6,520.41 × 3,879.05
  4. Step 4: Simplify right side
    4,718.99x = 25,292,963.81
  5. Step 5: Solve for x
    x = 25,292,963.81/4,718.99
  6. Step 6: Final answer
    x = 5,359.83

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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.