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Finding the Fourth Proportional to 3,864.73, 5,333.23 and 2,139.97

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Solution

The fourth proportional to 3,864.73, 5,333.23 and 2,139.97 is: 2,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,864.73 : 5,333.23 = 2,139.97 : x
  2. Step 2: Convert to fraction form
    3,864.73/5,333.23 = 2,139.97/x
  3. Step 3: Cross multiply
    3,864.73x = 5,333.23 × 2,139.97
  4. Step 4: Simplify right side
    3,864.73x = 11,412,952.20
  5. Step 5: Solve for x
    x = 11,412,952.20/3,864.73
  6. Step 6: Final answer
    x = 2,953.10

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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.