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Finding the Fourth Proportional to 3,459.36, 5,189.87 and 994.13

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Solution

The fourth proportional to 3,459.36, 5,189.87 and 994.13 is: 1,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.36 : 5,189.87 = 994.13 : x
  2. Step 2: Convert to fraction form
    3,459.36/5,189.87 = 994.13/x
  3. Step 3: Cross multiply
    3,459.36x = 5,189.87 × 994.13
  4. Step 4: Simplify right side
    3,459.36x = 5,159,405.46
  5. Step 5: Solve for x
    x = 5,159,405.46/3,459.36
  6. Step 6: Final answer
    x = 1,491.43

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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.