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Finding the Fourth Proportional to 3,459.56, 5,189.32 and 994.40

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Solution

The fourth proportional to 3,459.56, 5,189.32 and 994.40 is: 1,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.56 : 5,189.32 = 994.40 : x
  2. Step 2: Convert to fraction form
    3,459.56/5,189.32 = 994.40/x
  3. Step 3: Cross multiply
    3,459.56x = 5,189.32 × 994.40
  4. Step 4: Simplify right side
    3,459.56x = 5,160,259.81
  5. Step 5: Solve for x
    x = 5,160,259.81/3,459.56
  6. Step 6: Final answer
    x = 1,491.59

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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.