Home / 3,220.56-4,830.58-1,272.80

Finding the Fourth Proportional to 3,220.56, 4,830.58 and 1,272.80

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Solution

The fourth proportional to 3,220.56, 4,830.58 and 1,272.80 is: 1,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.56 : 4,830.58 = 1,272.80 : x
  2. Step 2: Convert to fraction form
    3,220.56/4,830.58 = 1,272.80/x
  3. Step 3: Cross multiply
    3,220.56x = 4,830.58 × 1,272.80
  4. Step 4: Simplify right side
    3,220.56x = 6,148,362.22
  5. Step 5: Solve for x
    x = 6,148,362.22/3,220.56
  6. Step 6: Final answer
    x = 1,909.10

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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.