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Finding the Fourth Proportional to 3,261.74, 4,892.88 and 1,040.90

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Solution

The fourth proportional to 3,261.74, 4,892.88 and 1,040.90 is: 1,561.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.74 : 4,892.88 = 1,040.90 : x
  2. Step 2: Convert to fraction form
    3,261.74/4,892.88 = 1,040.90/x
  3. Step 3: Cross multiply
    3,261.74x = 4,892.88 × 1,040.90
  4. Step 4: Simplify right side
    3,261.74x = 5,092,978.23
  5. Step 5: Solve for x
    x = 5,092,978.23/3,261.74
  6. Step 6: Final answer
    x = 1,561.43

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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.