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Finding the Fourth Proportional to 3,459.48, 5,189.05 and 994.28

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Solution

The fourth proportional to 3,459.48, 5,189.05 and 994.28 is: 1,491.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.48 : 5,189.05 = 994.28 : x
  2. Step 2: Convert to fraction form
    3,459.48/5,189.05 = 994.28/x
  3. Step 3: Cross multiply
    3,459.48x = 5,189.05 × 994.28
  4. Step 4: Simplify right side
    3,459.48x = 5,159,338.34
  5. Step 5: Solve for x
    x = 5,159,338.34/3,459.48
  6. Step 6: Final answer
    x = 1,491.36

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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.