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Finding the Fourth Proportional to 2,620.94, 3,929.54 and 2,374.90

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Solution

The fourth proportional to 2,620.94, 3,929.54 and 2,374.90 is: 3,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.94 : 3,929.54 = 2,374.90 : x
  2. Step 2: Convert to fraction form
    2,620.94/3,929.54 = 2,374.90/x
  3. Step 3: Cross multiply
    2,620.94x = 3,929.54 × 2,374.90
  4. Step 4: Simplify right side
    2,620.94x = 9,332,264.55
  5. Step 5: Solve for x
    x = 9,332,264.55/2,620.94
  6. Step 6: Final answer
    x = 3,560.66

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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.