Home / 4,744.80-7,117.20-3,189.60

Finding the Fourth Proportional to 4,744.80, 7,117.20 and 3,189.60

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Solution

The fourth proportional to 4,744.80, 7,117.20 and 3,189.60 is: 4,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,744.80 : 7,117.20 = 3,189.60 : x
  2. Step 2: Convert to fraction form
    4,744.80/7,117.20 = 3,189.60/x
  3. Step 3: Cross multiply
    4,744.80x = 7,117.20 × 3,189.60
  4. Step 4: Simplify right side
    4,744.80x = 22,701,021.12
  5. Step 5: Solve for x
    x = 22,701,021.12/4,744.80
  6. Step 6: Final answer
    x = 4,784.40

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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.