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Finding the Fourth Proportional to 1,561.03, 2,154.12 and 852.73

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Solution

The fourth proportional to 1,561.03, 2,154.12 and 852.73 is: 1,176.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.03 : 2,154.12 = 852.73 : x
  2. Step 2: Convert to fraction form
    1,561.03/2,154.12 = 852.73/x
  3. Step 3: Cross multiply
    1,561.03x = 2,154.12 × 852.73
  4. Step 4: Simplify right side
    1,561.03x = 1,836,878.43
  5. Step 5: Solve for x
    x = 1,836,878.43/1,561.03
  6. Step 6: Final answer
    x = 1,176.71

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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.