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Finding the Fourth Proportional to 2,765.74, 3,817.56 and 1,647.50

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Solution

The fourth proportional to 2,765.74, 3,817.56 and 1,647.50 is: 2,274.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.74 : 3,817.56 = 1,647.50 : x
  2. Step 2: Convert to fraction form
    2,765.74/3,817.56 = 1,647.50/x
  3. Step 3: Cross multiply
    2,765.74x = 3,817.56 × 1,647.50
  4. Step 4: Simplify right side
    2,765.74x = 6,289,430.10
  5. Step 5: Solve for x
    x = 6,289,430.10/2,765.74
  6. Step 6: Final answer
    x = 2,274.05

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Why These Related Problems?

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