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Finding the Fourth Proportional to 3,572.91, 5,360.38 and 1,930.64

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Solution

The fourth proportional to 3,572.91, 5,360.38 and 1,930.64 is: 2,896.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.91 : 5,360.38 = 1,930.64 : x
  2. Step 2: Convert to fraction form
    3,572.91/5,360.38 = 1,930.64/x
  3. Step 3: Cross multiply
    3,572.91x = 5,360.38 × 1,930.64
  4. Step 4: Simplify right side
    3,572.91x = 10,348,932.41
  5. Step 5: Solve for x
    x = 10,348,932.41/3,572.91
  6. Step 6: Final answer
    x = 2,896.50

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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.