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Finding the Fourth Proportional to 2,010.91, 3,015.28 and 623.87

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Solution

The fourth proportional to 2,010.91, 3,015.28 and 623.87 is: 935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.91 : 3,015.28 = 623.87 : x
  2. Step 2: Convert to fraction form
    2,010.91/3,015.28 = 623.87/x
  3. Step 3: Cross multiply
    2,010.91x = 3,015.28 × 623.87
  4. Step 4: Simplify right side
    2,010.91x = 1,881,142.73
  5. Step 5: Solve for x
    x = 1,881,142.73/2,010.91
  6. Step 6: Final answer
    x = 935.47

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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.