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Finding the Fourth Proportional to 5,493.12, 7,579.20 and 3,339.60

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Solution

The fourth proportional to 5,493.12, 7,579.20 and 3,339.60 is: 4,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,493.12 : 7,579.20 = 3,339.60 : x
  2. Step 2: Convert to fraction form
    5,493.12/7,579.20 = 3,339.60/x
  3. Step 3: Cross multiply
    5,493.12x = 7,579.20 × 3,339.60
  4. Step 4: Simplify right side
    5,493.12x = 25,311,496.32
  5. Step 5: Solve for x
    x = 25,311,496.32/5,493.12
  6. Step 6: Final answer
    x = 4,607.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.