Home / 2,979.20-4,466.28-1,129.30

Finding the Fourth Proportional to 2,979.20, 4,466.28 and 1,129.30

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Solution

The fourth proportional to 2,979.20, 4,466.28 and 1,129.30 is: 1,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.20 : 4,466.28 = 1,129.30 : x
  2. Step 2: Convert to fraction form
    2,979.20/4,466.28 = 1,129.30/x
  3. Step 3: Cross multiply
    2,979.20x = 4,466.28 × 1,129.30
  4. Step 4: Simplify right side
    2,979.20x = 5,043,770.00
  5. Step 5: Solve for x
    x = 5,043,770.00/2,979.20
  6. Step 6: Final answer
    x = 1,692.99

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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.