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Finding the Fourth Proportional to 2,171.48, 3,256.91 and 710.44

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Solution

The fourth proportional to 2,171.48, 3,256.91 and 710.44 is: 1,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.48 : 3,256.91 = 710.44 : x
  2. Step 2: Convert to fraction form
    2,171.48/3,256.91 = 710.44/x
  3. Step 3: Cross multiply
    2,171.48x = 3,256.91 × 710.44
  4. Step 4: Simplify right side
    2,171.48x = 2,313,830.11
  5. Step 5: Solve for x
    x = 2,313,830.11/2,171.48
  6. Step 6: Final answer
    x = 1,065.56

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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.