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Finding the Fourth Proportional to 2,098.94, 3,148.41 and 712.28

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Solution

The fourth proportional to 2,098.94, 3,148.41 and 712.28 is: 1,068.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.94 : 3,148.41 = 712.28 : x
  2. Step 2: Convert to fraction form
    2,098.94/3,148.41 = 712.28/x
  3. Step 3: Cross multiply
    2,098.94x = 3,148.41 × 712.28
  4. Step 4: Simplify right side
    2,098.94x = 2,242,549.47
  5. Step 5: Solve for x
    x = 2,242,549.47/2,098.94
  6. Step 6: Final answer
    x = 1,068.42

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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.