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Finding the Fourth Proportional to 1,927.81, 2,892.32 and 628.97

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Solution

The fourth proportional to 1,927.81, 2,892.32 and 628.97 is: 943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.81 : 2,892.32 = 628.97 : x
  2. Step 2: Convert to fraction form
    1,927.81/2,892.32 = 628.97/x
  3. Step 3: Cross multiply
    1,927.81x = 2,892.32 × 628.97
  4. Step 4: Simplify right side
    1,927.81x = 1,819,179.37
  5. Step 5: Solve for x
    x = 1,819,179.37/1,927.81
  6. Step 6: Final answer
    x = 943.65

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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.