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Finding the Fourth Proportional to 7,891.82, 10,890.69 and 4,534.87

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Solution

The fourth proportional to 7,891.82, 10,890.69 and 4,534.87 is: 6,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.82 : 10,890.69 = 4,534.87 : x
  2. Step 2: Convert to fraction form
    7,891.82/10,890.69 = 4,534.87/x
  3. Step 3: Cross multiply
    7,891.82x = 10,890.69 × 4,534.87
  4. Step 4: Simplify right side
    7,891.82x = 49,387,863.36
  5. Step 5: Solve for x
    x = 49,387,863.36/7,891.82
  6. Step 6: Final answer
    x = 6,258.11

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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.