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Finding the Fourth Proportional to 3,859.55, 5,788.03 and 1,261.88

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Solution

The fourth proportional to 3,859.55, 5,788.03 and 1,261.88 is: 1,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.55 : 5,788.03 = 1,261.88 : x
  2. Step 2: Convert to fraction form
    3,859.55/5,788.03 = 1,261.88/x
  3. Step 3: Cross multiply
    3,859.55x = 5,788.03 × 1,261.88
  4. Step 4: Simplify right side
    3,859.55x = 7,303,799.30
  5. Step 5: Solve for x
    x = 7,303,799.30/3,859.55
  6. Step 6: Final answer
    x = 1,892.40

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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.