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Finding the Fourth Proportional to 1,821.14, 2,731.73 and 554.71

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Solution

The fourth proportional to 1,821.14, 2,731.73 and 554.71 is: 832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.14 : 2,731.73 = 554.71 : x
  2. Step 2: Convert to fraction form
    1,821.14/2,731.73 = 554.71/x
  3. Step 3: Cross multiply
    1,821.14x = 2,731.73 × 554.71
  4. Step 4: Simplify right side
    1,821.14x = 1,515,308.35
  5. Step 5: Solve for x
    x = 1,515,308.35/1,821.14
  6. Step 6: Final answer
    x = 832.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.