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Finding the Fourth Proportional to 1,995.39, 2,753.70 and 1,156.09

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Solution

The fourth proportional to 1,995.39, 2,753.70 and 1,156.09 is: 1,595.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.39 : 2,753.70 = 1,156.09 : x
  2. Step 2: Convert to fraction form
    1,995.39/2,753.70 = 1,156.09/x
  3. Step 3: Cross multiply
    1,995.39x = 2,753.70 × 1,156.09
  4. Step 4: Simplify right side
    1,995.39x = 3,183,525.03
  5. Step 5: Solve for x
    x = 3,183,525.03/1,995.39
  6. Step 6: Final answer
    x = 1,595.44

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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.