Home / 4,820.80-7,231.20-4,225.60

Finding the Fourth Proportional to 4,820.80, 7,231.20 and 4,225.60

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Solution

The fourth proportional to 4,820.80, 7,231.20 and 4,225.60 is: 6,338.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,820.80 : 7,231.20 = 4,225.60 : x
  2. Step 2: Convert to fraction form
    4,820.80/7,231.20 = 4,225.60/x
  3. Step 3: Cross multiply
    4,820.80x = 7,231.20 × 4,225.60
  4. Step 4: Simplify right side
    4,820.80x = 30,556,158.72
  5. Step 5: Solve for x
    x = 30,556,158.72/4,820.80
  6. Step 6: Final answer
    x = 6,338.40

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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.