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Finding the Fourth Proportional to 6,280, 9,429.24 and 3,512.09

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Solution

The fourth proportional to 6,280, 9,429.24 and 3,512.09 is: 5,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,280 : 9,429.24 = 3,512.09 : x
  2. Step 2: Convert to fraction form
    6,280/9,429.24 = 3,512.09/x
  3. Step 3: Cross multiply
    6,280x = 9,429.24 × 3,512.09
  4. Step 4: Simplify right side
    6,280x = 33,116,339.51
  5. Step 5: Solve for x
    x = 33,116,339.51/6,280
  6. Step 6: Final answer
    x = 5,273.30

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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.