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Finding the Fourth Proportional to 2,751.86, 4,123.14 and 1,775.90

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Solution

The fourth proportional to 2,751.86, 4,123.14 and 1,775.90 is: 2,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.86 : 4,123.14 = 1,775.90 : x
  2. Step 2: Convert to fraction form
    2,751.86/4,123.14 = 1,775.90/x
  3. Step 3: Cross multiply
    2,751.86x = 4,123.14 × 1,775.90
  4. Step 4: Simplify right side
    2,751.86x = 7,322,263.71
  5. Step 5: Solve for x
    x = 7,322,263.71/2,751.86
  6. Step 6: Final answer
    x = 2,660.85

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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.