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Finding the Fourth Proportional to 3,459.96, 5,188.38 and 994.20

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Solution

The fourth proportional to 3,459.96, 5,188.38 and 994.20 is: 1,490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.96 : 5,188.38 = 994.20 : x
  2. Step 2: Convert to fraction form
    3,459.96/5,188.38 = 994.20/x
  3. Step 3: Cross multiply
    3,459.96x = 5,188.38 × 994.20
  4. Step 4: Simplify right side
    3,459.96x = 5,158,287.40
  5. Step 5: Solve for x
    x = 5,158,287.40/3,459.96
  6. Step 6: Final answer
    x = 1,490.85

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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.