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Finding the Fourth Proportional to 1,882.15, 2,822.61 and 649.54

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Solution

The fourth proportional to 1,882.15, 2,822.61 and 649.54 is: 974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,882.15 : 2,822.61 = 649.54 : x
  2. Step 2: Convert to fraction form
    1,882.15/2,822.61 = 649.54/x
  3. Step 3: Cross multiply
    1,882.15x = 2,822.61 × 649.54
  4. Step 4: Simplify right side
    1,882.15x = 1,833,398.10
  5. Step 5: Solve for x
    x = 1,833,398.10/1,882.15
  6. Step 6: Final answer
    x = 974.10

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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.