Home / 4,985.40-7,464.90-3,993.60

Finding the Fourth Proportional to 4,985.40, 7,464.90 and 3,993.60

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Solution

The fourth proportional to 4,985.40, 7,464.90 and 3,993.60 is: 5,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.40 : 7,464.90 = 3,993.60 : x
  2. Step 2: Convert to fraction form
    4,985.40/7,464.90 = 3,993.60/x
  3. Step 3: Cross multiply
    4,985.40x = 7,464.90 × 3,993.60
  4. Step 4: Simplify right side
    4,985.40x = 29,811,824.64
  5. Step 5: Solve for x
    x = 29,811,824.64/4,985.40
  6. Step 6: Final answer
    x = 5,979.83

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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.