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Finding the Fourth Proportional to 5,718.76, 7,891.52 and 3,200.44

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Solution

The fourth proportional to 5,718.76, 7,891.52 and 3,200.44 is: 4,416.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.76 : 7,891.52 = 3,200.44 : x
  2. Step 2: Convert to fraction form
    5,718.76/7,891.52 = 3,200.44/x
  3. Step 3: Cross multiply
    5,718.76x = 7,891.52 × 3,200.44
  4. Step 4: Simplify right side
    5,718.76x = 25,256,358.83
  5. Step 5: Solve for x
    x = 25,256,358.83/5,718.76
  6. Step 6: Final answer
    x = 4,416.41

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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.