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Finding the Fourth Proportional to 2,473.78, 3,710.69 and 830.35

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Solution

The fourth proportional to 2,473.78, 3,710.69 and 830.35 is: 1,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,473.78 : 3,710.69 = 830.35 : x
  2. Step 2: Convert to fraction form
    2,473.78/3,710.69 = 830.35/x
  3. Step 3: Cross multiply
    2,473.78x = 3,710.69 × 830.35
  4. Step 4: Simplify right side
    2,473.78x = 3,081,171.44
  5. Step 5: Solve for x
    x = 3,081,171.44/2,473.78
  6. Step 6: Final answer
    x = 1,245.53

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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.