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Finding the Fourth Proportional to 2,920.54, 4,028.06 and 1,872.70

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Solution

The fourth proportional to 2,920.54, 4,028.06 and 1,872.70 is: 2,582.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.54 : 4,028.06 = 1,872.70 : x
  2. Step 2: Convert to fraction form
    2,920.54/4,028.06 = 1,872.70/x
  3. Step 3: Cross multiply
    2,920.54x = 4,028.06 × 1,872.70
  4. Step 4: Simplify right side
    2,920.54x = 7,543,347.96
  5. Step 5: Solve for x
    x = 7,543,347.96/2,920.54
  6. Step 6: Final answer
    x = 2,582.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.