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Finding the Fourth Proportional to 2,115.64, 3,174.54 and 882.82

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Solution

The fourth proportional to 2,115.64, 3,174.54 and 882.82 is: 1,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.64 : 3,174.54 = 882.82 : x
  2. Step 2: Convert to fraction form
    2,115.64/3,174.54 = 882.82/x
  3. Step 3: Cross multiply
    2,115.64x = 3,174.54 × 882.82
  4. Step 4: Simplify right side
    2,115.64x = 2,802,547.40
  5. Step 5: Solve for x
    x = 2,802,547.40/2,115.64
  6. Step 6: Final answer
    x = 1,324.68

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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.