Home / 4,865.10-7,289.55-3,220.80

Finding the Fourth Proportional to 4,865.10, 7,289.55 and 3,220.80

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Solution

The fourth proportional to 4,865.10, 7,289.55 and 3,220.80 is: 4,825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,865.10 : 7,289.55 = 3,220.80 : x
  2. Step 2: Convert to fraction form
    4,865.10/7,289.55 = 3,220.80/x
  3. Step 3: Cross multiply
    4,865.10x = 7,289.55 × 3,220.80
  4. Step 4: Simplify right side
    4,865.10x = 23,478,182.64
  5. Step 5: Solve for x
    x = 23,478,182.64/4,865.10
  6. Step 6: Final answer
    x = 4,825.84

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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.