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Finding the Fourth Proportional to 7,857.82, 10,843.94 and 4,671.46

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Solution

The fourth proportional to 7,857.82, 10,843.94 and 4,671.46 is: 6,446.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.82 : 10,843.94 = 4,671.46 : x
  2. Step 2: Convert to fraction form
    7,857.82/10,843.94 = 4,671.46/x
  3. Step 3: Cross multiply
    7,857.82x = 10,843.94 × 4,671.46
  4. Step 4: Simplify right side
    7,857.82x = 50,657,031.95
  5. Step 5: Solve for x
    x = 50,657,031.95/7,857.82
  6. Step 6: Final answer
    x = 6,446.70

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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.