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Finding the Fourth Proportional to 7,891.72, 10,889.94 and 4,534.36

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Solution

The fourth proportional to 7,891.72, 10,889.94 and 4,534.36 is: 6,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.72 : 10,889.94 = 4,534.36 : x
  2. Step 2: Convert to fraction form
    7,891.72/10,889.94 = 4,534.36/x
  3. Step 3: Cross multiply
    7,891.72x = 10,889.94 × 4,534.36
  4. Step 4: Simplify right side
    7,891.72x = 49,378,908.34
  5. Step 5: Solve for x
    x = 49,378,908.34/7,891.72
  6. Step 6: Final answer
    x = 6,257.05

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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.