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Finding the Fourth Proportional to 2,018.71, 3,028.06 and 557.86

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Solution

The fourth proportional to 2,018.71, 3,028.06 and 557.86 is: 836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.71 : 3,028.06 = 557.86 : x
  2. Step 2: Convert to fraction form
    2,018.71/3,028.06 = 557.86/x
  3. Step 3: Cross multiply
    2,018.71x = 3,028.06 × 557.86
  4. Step 4: Simplify right side
    2,018.71x = 1,689,232.36
  5. Step 5: Solve for x
    x = 1,689,232.36/2,018.71
  6. Step 6: Final answer
    x = 836.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.