Home / 3,842.90-5,765.28-1,245.84

Finding the Fourth Proportional to 3,842.90, 5,765.28 and 1,245.84

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Solution

The fourth proportional to 3,842.90, 5,765.28 and 1,245.84 is: 1,869.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.90 : 5,765.28 = 1,245.84 : x
  2. Step 2: Convert to fraction form
    3,842.90/5,765.28 = 1,245.84/x
  3. Step 3: Cross multiply
    3,842.90x = 5,765.28 × 1,245.84
  4. Step 4: Simplify right side
    3,842.90x = 7,182,616.44
  5. Step 5: Solve for x
    x = 7,182,616.44/3,842.90
  6. Step 6: Final answer
    x = 1,869.06

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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.