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Finding the Fourth Proportional to 4,765.85, 7,150.22 and 1,805.20

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Solution

The fourth proportional to 4,765.85, 7,150.22 and 1,805.20 is: 2,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,765.85 : 7,150.22 = 1,805.20 : x
  2. Step 2: Convert to fraction form
    4,765.85/7,150.22 = 1,805.20/x
  3. Step 3: Cross multiply
    4,765.85x = 7,150.22 × 1,805.20
  4. Step 4: Simplify right side
    4,765.85x = 12,907,577.14
  5. Step 5: Solve for x
    x = 12,907,577.14/4,765.85
  6. Step 6: Final answer
    x = 2,708.35

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1.5x scale

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.