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Finding the Fourth Proportional to 5,718.43, 7,891.80 and 3,200.83

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Solution

The fourth proportional to 5,718.43, 7,891.80 and 3,200.83 is: 4,417.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.43 : 7,891.80 = 3,200.83 : x
  2. Step 2: Convert to fraction form
    5,718.43/7,891.80 = 3,200.83/x
  3. Step 3: Cross multiply
    5,718.43x = 7,891.80 × 3,200.83
  4. Step 4: Simplify right side
    5,718.43x = 25,260,310.19
  5. Step 5: Solve for x
    x = 25,260,310.19/5,718.43
  6. Step 6: Final answer
    x = 4,417.35

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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.